Mother by Fate (Harlequin Super Romance Series #1979)

To trust a stranger… 

Sara Havens helps others. Mothers. Children. Those who seek to escape from violence. Her work with The Lemonade Stand—a unique women's shelter—also lets her forget the loss of the child who should have been hers. And when a handsome stranger strikes up a poolside conversation, it's no coincidence. 

Bounty hunter Michael Edison is tracking a former resident of the shelter. Fearing for the missing woman's safety, Sara joins the pursuit. But nothing is what it appears to be—including Michael. As they grow closer, Sara risks losing her carefully constructed control…