Saving Jenna by Elle James

FBI Special Agent Jenna Jenkins needs help finding her half-sister’s newborn baby stolen from a Bozeman, Montana, hospital.

Ex-Navy SEAL Cliff Cranston left the Navy after witnessing too many atrocities he could do nothing to stop. Having lost faith in humanity, he accepts a job offer from an old teammate Stone Jacobs. His first assignment is to help an FBI agent find and rescue a newborn baby.
After placing the mother in a safe house Cliff and Jenna hunt down the kidnapper to bring the baby home. Working closely together they discover secrets that could kill them and a passion they cannot deny.