Talk about ripping the band-aid off, huh? The Perfect Couple uses its final episode to power through multiple reveals — yes, including the identity of Merritt’s killer — and wrap up every loose end dangling over the season. It is very satisfying! It also manages to have several laugh-out-loud moments, which is really something for a murder show, and Nicole Kidman takes the time to demonstrate the only way we can pronounce the word “escort” from now on. You have...