The Staircase Murders

The Staircase Murders is a 2007 Lifetime Television movie, directed by Tom McLoughlin and starring Treat Williams, Samaire Armstrong, and Kevin Pollack.

It tells the story of Michael Peterson, who was convicted in 2003 of killing his wife by beating her over the head. During the trial it was revealed that many years previously a friend of Peterson's, whose children he would later adopt, died under seemingly similar circumstances.

References

IMDB.com

Films directed by Tom McLoughlin

One Dark Night (1983)
Friday the 13th Part VI: Jason Lives (1986)
Date with an Angel (1987)
Sometimes They Come Back (1991)
Something to Live for: The Alison Gertz Story (1992)
Anya's Bell (1999)
The Unsaid (2001)
Murder in Greenwich (2002)
D.C. Sniper: 23 Days of Fear (2003)
She's Too Young (2004)
Odd Girl Out (2005)
Cyber Seduction: His Secret Life (2005)
Not Like Everyone Else (2006)
The Staircase Murders (2007)
Fab Five: The Texas Cheerleader Scandal (2008)
At Risk (2010)