For my story, I want an undercover cop to work alone. But I am finding the premise difficult to make it work, cause I cannot think of why an undercover cop would. I mean you don't want to send a cop to infiltrate a dangerous criminal organization, without monitoring him, and wanting to keep him safe. But I would like the cop to witness things, that no other cop does. Therefore later on, he has trouble getting his superiors to believe certain things about the case. It becomes the crooks word against his. But if he has back up, the other officers will support what he says, and it's easier for superiors to believe more than one cop, telling the same thing, compared to one only, against everyone else. Plus since it's a very low budget screenplay, I would like him to work alone, so less actors would needed, if possible. Is the concept feasible, or is it just not logical enough, and the police would just want to give the cop back up, that is surveying him, ready to go, in case his cover is blown?