The Staircase on Netflix https://www.imdb.com/title/tt0388644/

Ex army dude goes on trial for murdering his wife. He says she fell on the stairs. Later surfaces that another woman acquaintance of ex army dude also died in similar circumstances and he's also a closet bisexual. I love a bit of courtroom drama and loved this from start to finish despite not liking the ex army dude too much.