Eyewitness is one of the best things on TV I would say. It's not something that has a lot humor and if you can't watch drama, probably not your show, which is okay. However, it's not a show that is gonna make you depressed to watch. It has a very good story line and plot, it is not simply just about Philip and Lukas witnessing the murder and struggling with not being able to tell, mostly because of Lukas being paranoid of people finding out he's gay. There are many plot lines in this, like a ex FBI agent (now Philip's foster mom and sheriff in a small town), a FBI agent with a sister in serious trouble, and of course the killer. So you aren't just seeing things from Lukas and Philip's eyes. The writing is not predictable and you will be surprised and entertained.
This isn't a show that is in poor LGBT taste, there aren't any gay stereotypes in this.
This cast is really great, despite the fact that most of these actors aren't known. everyone on the show does a amazing job, I really love what the actors who play Philip and Lukas are doing.