Don DiPetta

Mike brings home a stray puppy for the weekend, but Molly has difficulty warming up to it.

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.

Maggie goes under cover working in a bar to investigate an anti-government group that regularly gathers there; a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage.

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.