Ep 9. Marti the Monster

Life With Derek season 1 episode 9, titled "Marti the Monster," follows the family as they prepare for Halloween. Marti, the youngest member of the family, is excited to dress up in her monster costume and go trick-or-treating. However, she soon realizes that her costume is missing a crucial component - a tail.

Meanwhile, Derek, the oldest son, is determined to throw the biggest Halloween party of the year. He enlists the help of his best friend Sam and together they plan to invite the entire school. However, things don't go as planned when Casey, Derek's step-sister, refuses to help out because she has a prior engagement.

As the day progresses, Marti becomes increasingly upset about her missing tail and decides to take matters into her own hands. She sets out to create her own tail, using materials she finds around the house. However, things don't go as planned and she ends up making a mess in the process.

Meanwhile, Derek and Sam's party preparations hit a snag when they realize they don't have enough decorations. They decide to raid Casey's room for inspiration, but end up getting caught by Casey and her boyfriend Max. Casey is infuriated that they would go behind her back and take her belongings without permission.

As the night wears on, tensions rise between Derek and Casey. However, when Marti shows up in her makeshift monster costume, everyone is reminded of the true spirit of Halloween. They come together to celebrate and have a good time, despite their earlier disagreements.

Ultimately, "Marti the Monster" is a heartwarming episode that highlights the importance of family, creativity, and coming together in times of need. It's a perfect Halloween-themed episode that will leave viewers feeling warm and fuzzy inside.