By Olivia Wheeler Coronation Street spoilers have confirmed a dark storyline next week as the missing Lauren Bolton case escalates. Only recently, Roy Cropper found himself charged with the murder of missing teenager Lauren despite being innocent and things are only going to get worse for him. In upcoming scenes, Sam Blakeman promises Nina Lucas that he will walk Freddie the dog before school. As Sam heads out, unbeknown to him, a sleuth watches from a table in the corner and later a distraught Sam returns without Freddie, explaining he ran off. As Evelyn Plummer watches over the café, Nina an…