Colin Abbott, who is serving a 35-to-80-year prison sentence for the gruesome murders of his wealthy father and stepmother on their Brady Township estate in 2011 continues to be unsuccessful in attempts to get his father’s millions.

Three years after Colin Abbott, 37, pleaded no contest to murdering Kenneth and Celeste Abbott, the courts still are denying him the fortune his father willed to him.

Prosecutors believe Colin Abbott, a one-time landscaper, shot Kenneth Abbott, 65, and his wife Celeste Abbott, 55, as part of a plan to erase $2 million in debt to his father and to inherit the couple’s $4 million estate.

Prosecutors took the possibility of the death penalty off the table in 2013, after Colin Abbott pleaded no contest to two counts of third-degree murder. He is serving 35 to 80 years in a state prison.

Court records suggest that just a month before his death, Kenneth Abbott, a pharmaceutical company retiree, updated his will to give most of his multimillion dollar estate to his son.

“The bulk of it will go to my son, Colin W. Abbott who has proven to me in the past few years he has become a hard worker, and a responsible person serious about improving his lifestyle,” Kenneth Abbott reportedly wrote in his will.

But under the state’s Slayer Act, people are not entitled to benefits or property belonging to people they have killed.

Abbott has tried several appeals to state courts in an attempt to get his inheritance.

However, lawyers representing Kenneth Abbott’s estate have all along argued that because of that law, Colin Abbott is not entitled to his father’s belongings.