The Bad Seed Syndrome

"The Bad Seed Syndrome" is the eighth episode of Season Two. It originally aired on November 14, 1998. It was written by Alexx Van Dyne and directed by Christopher Dozois.

Synopsis
Parasites spread by alien seeds take over MIB and threaten the world. As the remaining agents try to stop it, Jay can't keep his mouth shut since he's accidentally been given a truth serum.