A KAOS defector agrees to testify for CONTROL, so KAOS sends the Exterminator to kill him. The most cold-blooded, calculating killer who ever worked for KAOS, The Exterminator (William Schallert) hates defectors. To protect the defector, CONTROL has him pose as the Smart's nanny, an elderly Jewish woman.

In this episode, Max's apartment has an underground garage, even though it's a small house on a residential street.