The woman serving Charlie on the boat is wearing her hair down. In her close up, her hair is pulled up. Moments later her hair is down again.
When the Angels are at the beach table with Leilani, discussing Charlie's being taken from her, both Sabrina's and Kris' leis have fallen off their left shoulders. After Leilani speaks, in their next close-up, their leis are properly hanging around their necks again.
When Sabrina is driving her boat to Blue's yacht, the view from the yacht shows the boat in the middle of the empty ocean. But the close-up shots on Sabrina show the mountains of the islands behind her.
The person that shoots using a revolver with a silencer would not be silenced because a silencer works by holding in the compressed gases which cannot be done with a revolver because gases will escape around the chamber.
When the Angels are identifying "Charlie's" body, someone mentions that the body was found with identification for "Charlie" Townsend. Any identification would've been for "Charles", his legal first name, not "Charlie".
George Hollis writes "Wife working on your escape" but his next note ("Why?") is visible on the page below before the character has written it.
In the establishing shot at the nude beach, the people laying on towels and playing volleyball are all pretty obviously wearing flesh-colored bottoms.
Shadow of boom mike on wall when Kris walks over to hug Bosley at the start of the case.