Cait, 17, average. Loves Sherlock so maybe not that average. Lives with her mom and grandma. Hobbies include staying at home and reminding her mom of the time. Cath, 17, average. Loves waking up before the sun has risen so maybe not that average. Lives with her dad who's rarely home. Hobbies include not staying at home and reminding her dad to eat breakfast. Now, what happens when these girls find out they're sisters? And not just any kind of sisters, they're identical twins! Cait becomes Cath, Cath becomes Cait. You know the drill.