The Relentless Mate (Shifters of the Three Rivers #6)
Kira Nightingale
Rated: 4.50 of 5 stars
4.50
· 2 ratings · 409 pages · Published: 03 Jul 2025
Annabella McGrath leads a covert crew of rebels hellbent on tearing down the Wolf Council. Half-witch, half-wolf, and totally off-limits, she’s carved out a life with no mate, no alpha, and no apologies. She doesn’t need anyone—especially not a too-charming operative with secrets behind his smile.
Sam Shaw is undercover, embedded deep in enemy territory. His mission is clear: get in, gather intel, and eliminate the threat. But Annabella isn’t just a threat—she’s a temptation, all heat and fire and sharp edges he shouldn’t want. The more time he spends in her orbit, the harder it is to remember which side he’s on.
Their chemistry sizzles under every sparring match, every late-night stare, every brush of skin. But they can’t escape the truth. And when secrets are revealed, all hell will break loose.
The Relentless Mate delivers a high-tension romance full of secret identities, enemies-to-lovers, found family, fated mates, and explosive consequences.
This is part one of Sam and Annabella’s story. It ends on a cliffhanger and does not have an HEA - their HEA is in The Resurgent Mate, Book 7.
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The 'Shifters of the Three Rivers' series
3.80 · 46 ratings
supernatural · adult · fiction · paranormal · suspense · shapeshifters · book · romance · fantasy · abuse
Shifters of the Three Rivers reading order and complete book list ❯