I really liked this one. Having been afraid of how they were going to let Catherine/Marg leave, I left very satisfied with the results. They let Catherine be a badass and leave on her own terms. Was actually surprised that it was Laura who was the mastermind. Still a little unsure as to whether McQuaid was crooked or not, but his apparent heroics in the end at least made up for some if he was. I liked the ending. CSI isn't exactly known for long goodbyes so I liked the time they gave for Cath to say her farewells. It felt meta too. Like it was Marg saying goodbye and not Catherine. Loved that. Really loved the continuity too, with the mention of Jimmy Tadero and the final scene with Morgan mirroring the Pilot scene with Holly. Sad to see Catherine go, but it was at least fun while it lasted.