AW Hartoin Books in Order

Matilda Whipplethorn is tiny, hearing-impaired, and desperate to prove she is capable of more than babysitting. When humans tear her home from the manor wall, she has to protect her charges in a world that suddenly feels huge.

Mercy's PI father pulls her into a fast, ugly case involving a young woman's attack. Chasing answers from a dive bar to sorority row, Mercy learns she needs to solve it quickly or become the next victim.

Puppy MacClarity thinks the family stories about dead ancestor Ernest are just stories until one angry wish comes true. A summer of magic, fear, and family secrets shows him his clan is much stranger than he knew.

To avoid paperwork for her father, Mercy takes a case for an old rival and instantly regrets it. A missing man and an unruly dog turn a simple job into another scramble to stay ahead of trouble.

Mercy thinks she is finally free from her parents' investigations until a family friend's sudden death pulls her back in. Then a bride is murdered, and Mercy has to figure out whether the two deaths are connected.

Matilda reaches Paris hunting a cure, but the city is full of warring fairies and shifting loyalties. With Miss Penrose fading and the Vermillion clan in hiding, every question Matilda asks creates a new enemy.

Mercy escapes to Roatan for sun and scuba, only to find that her problems have followed her there. The deeper she gets into island trouble, the clearer it becomes that someone wants her dead.

Life in a human house feels dull after kidnapping and spriggan battles, until Matilda's tutor falls desperately ill. To save Miss Penrose, Matilda must return to the antique mall and face enemies she barely escaped before.

This short prequel catches Matilda Whipplethorn as a child, right when her quiet day turns wild. An adventure inside a dog's snout gives an early glimpse of the trouble that seems to find her.

Guilt-tripped by family, Mercy goes looking for a missing girl the police cannot find. What starts as a favor quickly turns dangerous when it becomes clear someone is determined to keep the runaway hidden.

Stranded in Vienna with her parents missing, Matilda hides in St. Stephen's Cathedral and tries to stay ahead of trolls, politics, and panic. The widening revolution may force her to use the dangerous power she has been hiding.

A Colorado ski trip goes off the rails when Mercy agrees to a desperate favor and ends up a suspect in a brutal crime. To save a child, she may have to break the law before she can solve the case.

When Mercy's friend turns up terrified in the middle of a brutal Missouri drought, the explanation could be grief, madness, or something long buried. Mercy follows the trail into a mystery that feels almost supernatural.

A mass killing at a St. Louis restaurant should have nothing to do with Mercy, but favors and family say otherwise. Her search for the truth leads from home to New Orleans and a case with a nasty scientific twist.

Sent to a remote castle to hide from a vengeful gang, Mercy expects trouble, but not murder. Surrounded by bickering cousins, baseball campers, and old ghosts, she has to solve the crime before the killers find her.

While recovering from injury, Mercy gets pushed into defending a retired librarian who has taken a life. The case is stranger than it first appears, and solving it forces Mercy toward a choice with real cost.

Mercy owes the Fibonacci family a favor, and it sends her to Paris to identify a woman who may not be dead after all. Mafia pressure, family secrets, and the Klinefeld Group make this search far riskier than it looks.

Matilda's hidden power is no longer hidden, and now everyone wants something from her. As her parents remain in danger and the unrest in France spreads, she heads to Rome in search of help only a powerful ally can give.

Racing home from Sturgis, Mercy finds danger waiting and gets pulled into one of her darkest cases yet. With her father missing and violent predators closing in, she and her oddball crew have to keep digging.

Mercy heads to the Sturgis motorcycle rally with her grandad, hoping for a break from trouble. Instead she gets a dead Vietnam veteran, a string of suspicious deaths, and an old secret still stalking the Watts family.

Back at the clinic and hoping for normal, Mercy instead lands in a lawsuit and a messy case full of jealousy and affairs. With Chuck absent and danger rising, she has to sort out who is lying before the situation turns deadly.

On a 1938 honeymoon, Stella Bled and her husband are pulled into danger when a Jewish friend entrusts them with a secret package. Fleeing Vienna after Kristallnacht, they must outrun the Reich and decide what they are willing to risk.

A cold case from 1965 drags Mercy back into family history when the FBI uncovers a new clue. What should be a vacation turns into a hunt for answers some relatives would rather leave buried.

After the terror of Vienna, Stella and Nicky chase Abel's missing cousins to a flooded Venice. Injuries, suspicion, and Nazis on their trail force Stella to decide how far she will go to keep a promise.

Nurse Mercy Watts returns to St. Sebastian after a kidnapping involving a German stranger. With family secrets and a suspect close to home, she tries to untangle a decades-old mystery while those around her struggle to keep her safe.

In 1939, Stella’s intelligence training ends early when her mentor sends her on a courier assignment. A personal favor takes her to Berlin, where Nazi persecution and doubts about women agents test her courage and usefulness.

Working undercover in occupied Paris, Stella must serve both British intelligence and her Nazi handler. An assignment to loot Jewish homes turns her artistic knowledge into a dangerous opportunity to protect people who have nowhere to turn.

Stella longs to leave undercover work in Amsterdam, but a new assignment forces her to assess two Dutchmen’s loyalties. With invasion approaching and someone recognizing her cover, a precarious bargain draws her toward the bombing of Rotterdam.

Mercy knows who attacked her, but the blackmailer remains elusive. A Christmas trip to Germany with her grandmother brings festive markets, an FBI request, and old family tensions that complicate her efforts to uncover the truth.

Recovering from an injury in 1940, Stella faces a struggle within British intelligence while her husband joins the air war. New duties in London expose her to the Blitz, competing loyalties, and threats beyond the battlefield.

A blizzard traps Mercy at a Swiss mountain hotel where guests fall ill in a troubling pattern. Without medical equipment or an escape route, she must investigate hidden connections while a violent attack raises the stakes.

A young girl’s friendship with an invisible woman turns frightening when the ghost becomes distressed and the child cannot explain why. Jess and Libby investigate the family’s secrets while juggling their own children and responsibilities.

Widowed Jess and struggling mother Libby buy a haunted house in St. Sebastian. When its resident ghost offers Libby employment on the condition that they solve his decades-old murder, the friends embark on an unusual investigation.

The ghost of a 1940s detective hires Jess and Libby to solve the one case that defeated him. A missing car and an unexplained death lead the friends through buried secrets and a growing trail of danger.

Mercy’s engagement and new home should mark a happy beginning, but the discovery of missing teenagers’ bodies reopens old wounds. Despite her father’s warnings, secrets involving her family and fiancé force her to investigate her own past.

A beloved handyman’s mysterious inheritance changes his life before he dies during a Christmas pageant. Jess and Libby answer his niece’s plea for help, tracing the fortune to an old crime and secrets that refuse to stay buried.

Puppy MacClarity’s hopes for an ordinary summer end when her family is attacked. With her grandfather barely surviving and her mother’s defenses weakening, a mysterious map and someone seeking information about a cauldron deepen the danger.

A house sale draws Mercy into suspicions surrounding a woman’s apparently natural death. With little evidence and an old enemy offering a clue, she searches for a sinister pattern before more vulnerable people are harmed.

Disappearing agents in Lyon point to a traitor feeding intelligence to the Nazis. Stella travels undercover as an American journalist with her sister, but rival German intelligence services and Gestapo interest make their mission increasingly dangerous.

A family spring break trip to Cornell draws Jess and Libby into a dead professor’s decades-old mystery. As they question an apparent suicide, a hostile podcaster and disturbing new evidence complicate their search for the truth.

Jess and Libby’s visit to Gettysburg takes a strange turn when the ghosts at their historic inn fall unusually silent. Communication problems, old grudges, and family complications draw them into a mystery rooted in the town’s past.

Stella travels to Nuremberg with a double agent carrying intelligence that could change the war. When he vanishes from Hitler’s favored hotel, she must evade dangerous attention and find a way to bring the information home.

A mysterious disappearance and a clue hidden in Stella’s liquor cabinet send Mercy and her godmothers to Austria. Following connections between the Watts and Bled families, she confronts an old enemy and secrets spanning generations.

Jess and Libby tackle an estate deadline complicated by an uncooperative ghost while investigating a decades-old murder. Their client believes the imprisoned man is innocent, forcing the friends to untangle overlapping secrets among the living and dead.

Small thefts from locked houses on a seemingly perfect street bring Mercy a puzzling case. The missing keepsakes lead toward an old crime, a runaway woman, and a stalker whose intended target may be someone else.

Stella and her mentor enter Prague in 1942 to stop an assassination, only to discover their contacts are dead. Her determination to help endangered friends strains their partnership as Heydrich’s terror makes every choice potentially fatal.