ROCHESTER, N.Y. — The Rochester psychiatrist who buried Matthew Stratton's body in the yard of a Rowley Street home nearly four years ago is about to be a free man. He is scheduled for a conditional release later this month.

William Lewek pleaded guilty in February 2015 to tampering with evidence, saying that he "panicked" when the 32-year-old man died of an overdose in his house. Lewek was sentenced to one-and-a-half to four years in prison. Lewek was denied parole at least once.

Stratton's mother, Kym, says she's been fighting for justice since the start. She recalls his disappearance in October 2013.

"When he came up for parole, we sent over a hundred letters to the parole board trying to get him denied, and they've been in contact with me every step of the way," said Stratton. "I knew there was something wrong within two days of not hearing from him. I talked to him every day. When it came to be an overnight thing and his dogs were left home, that’s when I knew something was wrong."

His family remembers him as a kind, playful man. A person who loved baseball and football, who loved to spend time with his family.

"He really would give the shirt off of his back,” said Amber Stratton, Matthew Stratton’s sister. “He volunteered at the Big Brother and Big Sister Program, and if you have an addiction program, he'd want you to seek help. Never give up."

William Lewek is expected to be out on a "conditional release" on December 21.