Mr. Morgan (possibly "Harrison") is a Character on DEXTER. He is Harry Morgan's father, who in extension is Debra Morgan's grandfather as well as Dexter Morgan's (through adoption). Mr. Morgan worked as a janitor at the Angel of Mercy Hospital in Miami, Florida, where he spent a 30 year career that brought him up to Chief of Maintenance. Harry praised his father for working hard at the hospital, putting food on his family's table. Mr. Morgan likely passed in Dexter's youth, it's uncertain if he ever knew his grandfather.