Life with Derek - Season 4 Episode 16

Now that they've been dating for a few weeks, Casey (Ashley Leggat) and Truman (Joe Dinicol) have officially reached boyfriend/girlfriend status. So when Truman announces he's going to a private school party in Toronto that weekend, Casey assumes she's invited. But Nora isn't sure how she feels about Truman and doesn't like Casey travelling two hours to a party. Even though Casey volunteers to stay with her cousin Vicki (Paula Brancati), Nora still isn't comfortable with the idea. Instead, she suggests Derek (Michael Seater) chaperone. Casey is outraged at the idea, but that's the condition. Casey's not the only McDonald girl with a date Saturday night Lizzie (Jordan Todosey) has one too and with a boy Nora's never met. Nora figures Lizzie could also use a chaperone and finds Edwin (Daniel Magder) more than happy to oblige. Though Derek had intended to spend his time in Toronto hanging with his hockey buddies, he quickly changes his plans when he meets a cute girl while dropping Casey and Vicki off at the party. Unfortunately the night is less successful for Casey, who not only learns that Vicki and Truman used to date, but catches them in a kiss. Devastated, Casey finds support from a most unlikely source: Derek. Back home at Smelly Nellie's, chaperone Edwin is giving Lizzie's date, Marvin (Landon Norris), the third degree. Lizzie is furious and Marvin is very uncomfortable. Edwin finally does the right thing and leaves before Marvin does.