Yellowstone Wolf. Yellowstone, #1

Her assignment leads her into the wilderness-right back to the man who stole her heart. Leslie Starr thought she'd left her past behind when she'd joined the Shifter Federal Bureau of Investigation. Unfortunately, the series of violent crimes she's investigating in Wyoming appear to target her best friend Grace, head of the SFBI. and the sister of her ex-fiancé, Roger. Leslie's never fit in with Roger's wolf pack.
She doesn't do sweet, subservient, or small-town living. The fact that she still burns for Roger doesn't help, especially now that he's the alpha of his group and needs to claim a mate. Roger Diego's ranch near Jackson Hole is a safe haven for the Yellowstone Pack, and as their alpha, he's expected to put their needs before his own-even when it means breaking his engagement to the woman he loves and embracing the life of a shifter over his human side. When a dangerous criminal targets shifters in his area, Roger will do whatever he can to help catch them, including working with his captivating ex, Leslie.
Roger knows Leslie is his mate and longs for her to submit to him, but he doubts she'd ever let any man claim her. With his sister's life on the line, they have to close this case-before their forbidden desires put the entire pack in danger. Yellowstone Wolf is an instantly addictive paranormal romance set in the world of Jaylee Austin's thrilling Sarim Prince series - described by readers as "utterly stunning" and filled with "plenty of heartache and mystery."