Hidden enemies can be deadly. 

Deadly Connection by Lenora Worth

On her way to question US marshal Emmett Gage about a DNA match that implicates his relative in a cold case and a recent murder, Officer Belle Montera's attacked. Now she and her K-9 partner must team up with Emmett to find his cousin and the person after Belle. But can they figure out who's targeting her without becoming murder victims themselves?

Explosive Situation by Terri Reed

Detective Henry Roarke's determined to prove his innocence to internal affairs officer Olivia Vance--but first he must survive the bomber targeting him and his bomb-sniffing K-9, Cody. With a coming baby to protect and an investigation to pursue, Olivia has her hands full...until she becomes a target, as well. Can they catch the bomber before they all lose their lives?

New York Times Bestselling Author Lenora Worth

Previously published as Deadly Connection and Explosive Situation