Towards the end of the movie, Chloe (Rose Leslie) convinces Kaulder (Vin Diesel) to not destroy the witches heart and to continue living. She justifies her request and then says "besides, you still owe me $50,000". The interchanges is a paraphrase of a conversation between Vin Diesel and Paul Walker in The Fast and The Furious where Dom says to Brian "besides, you still owe me a ten second car"