Cain Shepherd · #8

Edge of Darkness

Kate Bold

Crime Fiction Suspense Thriller Mystery Thriller

Victims involved in the commercial sex industry are found dead after prolonged captivity in sterile meditation chambers, forcing FBI Agent Cain Shepherd to hunt a killer who views forced spiritual cleansing as justice—before another exploiter faces this twisted path to redemption through death.

The CAIN SHEPHERD mystery series delivers pulse-pounding suspense, while filled with shocking twists and revelations. With its distinctive protagonist, this series reinvigorates the mystery genre and will keep you turning pages all through the night. Fans of Robert Dugoni, Lisa Gardner, and Gregg Olsen are sure to fall in love.

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Published
September 17, 2026
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Cain Shepherd

The series

Full series details →
#1 · 2026Edge of Madness #2 · 2026Edge of Murder #3 · 2026Edge of Mercy #4 · 2026Edge of Night #5 · 2026Edge of Silence #6 · 2026Edge of Hope #7 · 2026Edge of Sanctity #8 · 2026Edge of Darkness #9 · 2026Edge of Vengeance #10 · 2026Edge of Redemption
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