Kate discovers the truth about Joss and Scott and April receives fantastic news about Marc's career, but must work out how to break her other news to him. Meanwhile, Karen meets Adam's parents, but must still deal with Lydia.moreless
Moretti goes undercover to investigate the brutal murders of meat-company owners. Meanwhile, Pierce contemplates making a personal confession to Moretti.
After three suspects walk free due to a witness recanting her statement, people start showing up dead. Caitlin and Joe decide to go into business together, selling donuts online, but have some issues agreeing on things. Evan gets arrested and turns to Cassidy for help.moreless
International tensions mount as Harm, Mac and Bud board an aircraft carrier in the Sea of Japan to investigate the accidental shooting down of a North Korean civilian airline by Navy jets. While negligence on the part of the Navy fliers is indicated, Harm and Mac uncover evidence of a spy aboard the carrier. Meanwhile, the threat of war becomes real when a U.S. salvage vessel is sent to the site to help with the investigation and two North Korean warships threaten to sink it if both U.S. ships don't leave the area immediately.moreless