Dexter Colt is a private detective hired by Homer to spy on Lisa and report his discoveries so Homer could appear to know facts about her life. However, Colt charges Homer $1000 for expenses, including a $40 steak, which would've been free had Colt eaten all of it, as well as silver bullets, because Colt initially suspected Lisa of being a werewolf. When Homer refused to pay, Colt framed Lisa of stealing all the animals of the Screaming Monkey Medical Research Center.
- Episode – "The Dad Who Knew Too Little"
- – The Simpsons Movie Cameo
- Episode – "Lisa Simpson, This Isn't Your Life"