In an interview with Parade, the Californication guest star said that he is grateful for the opportunity to portray Peterson as an actor and promised that viewers would be "surprised" at the final product.
Lowe explained: "It's a real transformative character for me to play. It took six hours of getting my hair dyed to get my hair grey. What I learned is, I'm glad I'm not actually grey!
"It's just a very different style than anything I've ever done before and I think people are going to be surprised."
Lowe also revealed that the crew shot two different endings to accommodate the results of the real-life trial, adding: "Drew Peterson is awaiting trial for the murder of one of his wives, and he could very easily be off by the time the movie comes out in January. In fact, we shot two endings just to protect ourselves."
Peterson recently filed legal documents against Lifetime Entertainment in an effort to prevent the network from creating and airing the biopic.