FBI Agent Gardner Camden is an analytical genius with an affinity for puzzles. He also has a blind spot on the human side of investigations, a blindness that sometimes even includes people in his own life, like his beloved seven-year-old daughter, Camila. Gardner and his squad of brilliant yet quirky agents make up the Patterns and Recognition (PAR) unit, the FBI’s hidden edge, brought in for cases that no one else can solve. When DNA links a murder victim to a serial killer long presumed dead, the team springs into action. A second victim establishes a pattern, and the murderer begins leaving a trail of clues and riddles especially for Gardner. And while the PAR team is usually relegated to working cold cases from behind a desk, the investigation puts them on the road and into the public eye, following in the footsteps of a killer.

Poe Webb, the host of a popular true crime podcast, invites people to anonymously confess crimes they've committed to her audience. She can't guarantee the police won't come after her "guests," but her show grants simultaneous anonymity and instant fame --- a potent combination that's proven difficult to resist. After an episode recording, Poe usually erases both criminal and crime from her mind. But when a strange and oddly familiar man appears on her show, Poe is forced to take a second look. Not only because he claims to be her mother's murderer from years ago, but because Poe knows something no one else does. Her mother's murderer is dead. Poe killed him.

Detective Evan Bolton is gutted by his latest investigation. His friend and mentor, retired detective Rod McLeod, has been murdered, his body left in the trunk of a junkyard car. When McLeod’s daughter and grandson abruptly vanish, Evan knows it’s not a coincidence. Search-and-rescue canine specialist Rowan Wolff agrees as she and her dog, Thor, track the missing family. The two cases converge in a puzzling twist. Evan discovers that McLeod has been reinvestigating old crimes --- solved but not forgotten. Evan takes them on, one by one, and a disturbing suspicion forms that someone in law enforcement has something to hide and would do anything to keep those secrets buried. But Evan and Rowan’s time is slipping away. They have to find the killer now. Before someone else disappears. Before someone else dies.

Many miles from anywhere in the middle of Lake Erie, Trouble Island serves as a stop-off for gangsters as they run between America and Canada. The remote isle is also the permanent home to Aurelia Escalante, who serves as a maid to Rosita, lady of the mansion and wife to notorious Prohibition gangster Eddie McGee. Aurelia wants nothing more than to escape Trouble Island, but she is hiding a secret of her own. She is in fact not a maid, but a gangster’s wife in hiding, as she runs from the murder she committed five years ago. Shortly after the group of criminals, celebrities and scoundrels arrive, Rosita suddenly disappears. Aurelia plans her getaway, going to the shore to retrieve her box of hidden treasures, but instead finds Rosita’s body in the water. Someone has made sure Aurelia was the one to find her.

Charlie Webb is a third-rate lawyer who graduated from a third-rate law school and has opened his own law firm, where he gets by handling cases for dubious associates from his youth and some court-appointed cases. In AN INSIGNIFICANT CASE, he’s appointed to be the attorney for a decidedly crackpot artist who calls himself Guido Sabatini (born Lawrence Weiss). Sabatini has been arrested --- again --- for breaking into a restaurant and stealing back a painting he sold them because he was insulted by where it was displayed. But as Lawrence Weiss, he’s also an accomplished card shark and burglar; while he was there, he stole a thumb drive from the owner’s safe. When this minor theft case becomes a double homicide, and even more, Charlie is faced with the most important and deadliest case of his life.

There’s been a sensational murder at historic Castle Kinloch, a gothic fantasy of grey granite on a remote island in the Highlands of Scotland. Literary superstar Brett Saffron Presley has been found dead --- under bizarre circumstances --- in the castle tower’s book-lined study. Years ago, Presley purchased the castle as a showpiece for his brand and to lure paying guests with a taste for writerly glamour. Now it seems that the castle has done him in…or, possibly, one of the castle’s guests has. Detective Chief Inspector Euan McIntosh, a local with no love for literary Americans, finds himself with the unenviable task of extracting statements from three American lady novelists. Why did these authors really come to Castle Kinloch?

When a tragic accident separates three dogs from their human, they find themselves up for adoption --- separately. But Riggs, a dedicated, loyal Australian Shepherd, refuses to see his family torn apart. After the exuberant and fun-loving doodle Archie and quick-witted Jack Russell Luna are taken to new homes, Riggs' powerful herding instincts send him on a journey to bring his pack back together again.

Molly Gray has always loved the holidays. When Molly was a child, her gran went to great lengths to make the season merry and bright, full of cherished traditions. The first few Christmases without Gran were hard on Molly, but this year, her beloved boyfriend and fellow festive spirit, Juan Manuel, is intent on making the season Molly’s most joyful yet. But when a Secret Santa gift exchange at the Regency Grand Hotel raises questions about who Molly can and cannot trust, she dives headfirst into solving her most consequential --- and personal --- mystery yet. Molly has a bad feeling about things, and she starts to wonder: Has she yet again mistaken a frog for a prince?

1950s, rural Ireland. A loner comes across a mysteriously empty car in a field. Knowing he shouldn’t approach but unable to hold back, he soon finds himself embroiled in a troubling missing person case, as a husband claims his wife may have thrown herself into the sea. Called in from Dublin to investigate is Detective Inspector Strafford, who soon turns to his old ally --- the flawed but brilliant pathologist Quirke --- a man he is linked to in increasingly complicated ways. But as the case unfolds, events from the past resurface that may have life-altering ramifications for all involved.

Steve Wheeler is enjoying retired life. He still does the odd bit of investigation work, but he prefers his familiar routines: the pub quiz, his favorite bench, his cat waiting for him at home. His days of adventure are over. Adrenaline is daughter-in-law Amy’s job now. Amy Wheeler thinks adrenaline is good for the soul. Working in private security, every day is dangerous. She’s currently on a remote island protecting mega-bestselling author Rosie D’Antonio, until a dead body and a bag of money mean trouble in paradise. So she sends an SOS to the only person she trusts. As a thrilling race around the world begins, can Amy and Steve outrun and outsmart a killer?