I want to get better at writing plot when it comes to thrillers. I think I am better at character development and motivation, but getting twists and turns to hold together in a web is a challenge for me. For my screenplay, let me know what you think of these plot points. The first is a cop, COP A who is guarding a witness, who is under protection, because she in danger of being assassinated before a trial, that she is going to testify on. Some gang members come to take her out, and a gunfight ensues. The witness is part of the gang, but she is being forced legally to cut a deal and testify. Another cop, COP B is undercover and has infiltrated the gang. He doesn't realize that he and the gang are going to where the witness is staying to assassinate her but he figures it out just as they arrive. As the gunfight ensues one of the gang members drops his gun. The witness grabs it, and while COP A is preoccupied in defending her, she shoots COP B to death, thinking she was one of the gang members who has come to kill her. Now I want to write this so that COP A will call it in of course, but still wants to take her to the trial tomorrow, and act like everything is still a go. That way, they can still get her testimony, and afterwords, they can then grill her about killing the undercover cop, perhaps even on the stand, after. Or does this not add up at all, and they would take her in for questioning, and delay the trial? For the story to go my way, I need the trial to still go on as planned the next day, timeline wise. Another plot point is, is that later COP A wants to get revenge for COP B's death. I have a plan for him to execute, but need him to ask his captain to go along with it. Is it far fetched though, that if a cop is going to get revenge, and kill some gang members, that he would risk getting caught by asking his captain to join him? What do you think? Will these two plot points make lodgical sense, or do they create holes? Thanks for the input!