If we're basing it around them solving a case, I think we'd need to brainstorm a little before I could come up with what they're working on - I'm one of those people who can never figure out whodunit, which is part of why I love mysteries so much. No matter what, I always end up surprised. But if it's something simpler, like Shawn harassing Lassiter around the office, or Lassie getting his heart stomped on by his ex (again) or something along those lines, I could come up with a few ideas for that with no problem.