Amy is determined to clear Ty's name. She and Ty eventually discover that Jeremy over-insured the horse and had been lying about his whereabouts.
Lou deals with unwanted "domestic help" and inappropriate attention from Caleb, eventually having to set firm boundaries with him. Heartland 6x14
Buckingham dies shortly after surgery. A post-mortem reveals an overdose, and because Ty was the last person to administer a shot, he is held responsible. Amy is determined to clear Ty's name