Don DiPetta

Maggie goes under cover to investigate a group.

Angus "Mac" MacGyver and Jack Dalton, special agents for the Department of External Services (DXS), join forces to recover a missing bioweapon that has the ability to destroy hundreds of thousands of people with one single drop.

McCall helps a mob accountant scour the city for a lost ledger of evidence he must provide to the FBI in exchange for entrance into the Witness Protection Program; Mel frets over how to tell her best friend that Harry never died.

Kate tires of waiting for Dan to complete his household chores; the "Good Morning, Malibu" staff members discover the recipient of an office collection fund has passed away.