Agent Grothy was sent to escort Kim Bauer discreetly out of Los Angeles when her father Jack Bauer pressured CTU to protect her from a possible nuclear threat to the city. The plan was for Grothy to pick her up at the house of Megan Matheson, and drive her to the San Jose home of Aunt Carol. Because Kim fled with Megan from the murderous Gary Matheson, Grothy was unable to find her. Jack and George Mason posted Grothy there to wait.
Grothy departed at some point before 5:40am; he was not present at the Matheson residence when Kim Bauer returned with a deputy sheriff.