When Murdoc drugs and kidnaps MacGyver, Mac uses a needle and his teeth to escape and join the team to save Murdoc’s next victim.

After one of Murdoc's go-to assassins agrees to hand over Murdoc to MacGyver in exchange for $10 million, the team finds itself protecting Murdoc from his former mentor, Nicholas Helman, who wants him dead. Also, Jack realizes he may still have feelings for Riley's mother, Diane.