Plot hole: When April O'Neil calls Vernon Fenwick (drives the channel 6 van), he answers his phone and immediately says "O'Neil". When the scene cuts back to O'Neil, we see she called from a payphone. Fenwick would have no way to know it was her calling.
Plot hole: The turtles are taken away to have their blood drained for the mutagen but Splinter is left behind. How come Splinter wasn't taken? He also has the mutagen in his blood.
Upvote valid corrections to help move entries into the corrections section.
Suggested correction: Because April told Sacks that she saved the turtles she never said anything about Splinter being saved as well. So Sacks assumed that only the turtles survived and Splinter didn't.
Suggested correction: That isn't a plot hole. Vernon assumed April was the person calling him and was correct. People do this all the time in real life.
BaconIsMyBFF