Ali Brandon Books in Order

At the court of Ludovico Sforza, Leonardo stages a living chess match that ends with one of the players dead. As he investigates, his sharpest ally is apprentice Dino, whose own secret could upend the whole inquiry.

War is closing in on Milan, and Leonardo is ordered to design a flying machine for the duke. While Delfina worries that her father's arrival could expose her secret, a murder in the workshop turns invention into peril.

After two female servants are murdered, Leonardo sends his apprentice Dino undercover among the attendants of Contessa Caterina. For Delfina, who is already hiding behind a false identity, the assignment is dangerous in more ways than one.

Darla Pettistone inherits a Brooklyn bookstore and a very opinionated black cat named Hamlet. During a high-profile author event, a sudden death looks like an accident, until Hamlet uncovers a clue that says otherwise.

Settling into life at Pettistone's Fine Books, Darla hires an unlikely new clerk after Hamlet approves him. When a local businessman is found dead and Hamlet may have been nearby, cat and bookseller follow the clues through Brooklyn.

Still rattled by past danger, Darla takes karate lessons and tries to pull Hamlet out of his funk. Then their dojo sensei turns up dead, and the mystery is just the thing to get both sleuths moving again.

A viral karate video makes Hamlet a minor celebrity and lands Darla at a Fort Lauderdale cat show. When Hamlet vanishes and reappears beside a corpse, the trip turns into a messy, cat-filled murder case.

Darla hopes a Fourth of July block party will help her Brooklyn bookshop, but local rivalries are already simmering. Then Hamlet finds one shopkeeper dead, and a second death turns the celebration into a hunt for a buried secret.

As Thanksgiving nears, Darla juggles wedding chaos, a suspicious online bidder, and trouble at a neighboring antique shop. When murder enters the picture, she and Hamlet have to untangle rare books, secrets, and a very nervous neighborhood.

Ruby Sparks is managing her half-sister's West Palm Beach botanica when a Tarot reading points toward murder. With help from two sharp black cats and a loyal pit bull, she starts digging into a death that no longer looks accidental.