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.