Insidious plunges FBI agents Savich and Sherlock into a lethal web of family intrigue. Wealthy industrialist Venus Rasmussen suspects she’s being poisoned, and a bold assassination attempt pushes the agents to uncover secrets among her powerful relatives.

Meanwhile, Special Agent Cam Wittier joins forces with Detective Daniel Montoya in Los Angeles to pursue the Starlet Slasher, a ruthless killer preying on young actresses. As bodies mount, Cam realizes the truth may hit dangerously close to home.

Fans of FBI thrillers and crime dramas will find Insidious a riveting blend of procedural detail and adrenaline-fueled suspense. Catherine Coulter delivers a multi-layered mystery that challenges her agents at every turn.

Key highlights:

• High-stakes investigation into attempted murder
• Interwoven serial killer subplot
• Complex family secrets and motives
• Fast-paced twists and a shocking finale

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