Complex sentence: He has a tendency to lose ladders, one of which trips up and nearly kills someone in episode twelve and in episode ten we learn that his neglect of a loose floor tile in the smoking room has put one of his colleagues into a coma.
Split into simpler sentences: He has a tendency to lose ladders, one of which trips up and nearly kills someone. We also learn that his neglect of a loose floor tile in the smoking room has put one of his colleagues into a coma.