Joint Investigation

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.
LONE AGENT 

Under other circumstances, FBI agent Samantha Bennett might welcome a bit of backup—but not from an overprotective Mountie. She's been on the trail of a serial killer for six months and no one has ever taken the case seriously…until now. When Royal Canadian Mounted Police inspector Drew Kelley saves her life, he decides that the hunt for "Birdman" is his problem, too. Together they begin a cross-continent chase to stop the madman before he strikes again. However, Samantha fears her growing feelings for the lawman may weaken her focus, or worse—put Drew directly in the killer's sights… 

Northern Border Patrol: Keeping the U.S.–Canadian border safe