One disappointing miniseries and one complete absurdity

After 3 episodes (of 6) I'm underwhelmed by the British police drama River, in which the eponymous detective hears and responds to the voices (and images) of dead people, in particular his charming colleague "Stevie" who was recently shot in an apparent assassination. The premise is pretty good, as we see this clearly disturbed man try to keep his career alive in the London PD and try to solve the mystery of the death of his partner, and he's a complex character though not unlike a few thousand other noir detectives - a loner, an eccentric, and obsessive-compulsive type. At the heart of the matter, it seems that he and Stevie had a flirtatious relationship, and we want to find out if their friendship became any more than that. Looks unlikely through 3 episodes, but that could change. All that said what really throws me off is the completely ridiculous sense of how a police department and police investigations work. Each of the first 3 episodes also involved a case of some sort that River neatly solves within the hour time slot in various ludicrous and improbable ways. Worse, there's no sense of a working PD; for example, how many officers do you think would be involved in the investigation if one of their colleagues was shot in the back of the head? In this show, the answer is 2: River and a guy assigned to more or less be his "babysitter," and his supervisor keeps telling him to drop the matter anyway. We learn also that Stevie's family is involved in gang crimes, and somehow she got involved in a case that sent her brother to prison. Really? And so forth. We get a # of scenes of River undergoing counseling w/ a female psychiatrist, and what does that remind you of? Too many of the 2ndary characters are one-dimensional, one-note types: the supervisor constantly telling River to focus on his cases, e.g. This is a miniseries w/ a hopeful premise and a good start for me it never has the ring of truth. Additional note for the record: At least it's better than Glitch, about people rising from the dead in a midwest cemetery, that made no sense from the start and got increasingly ridiculous throughout the first episode, which three of us couldn't even bear watching to the finish.