Dateline NBC takes an in-depth look at the disappearance of Utah mother Susan Powell in an all-new two-hour special, Haunted, nearly 10 years after she vanished, leading her husband, Josh, to become the prime suspect. For the first time on network television, Dateline will air private journals, home videos and emails that shed new light on what really happened to Susan, as well as rarely-seen video of Susan’s son speaking with a detective the day after she went missing.

Reported by Keith Morrison, the broadcast also features new interviews with key players in the case, including Josh’s sister Jennifer Graves, Susan’s dad Chuck Cox, and lead detective Ellis Maxwell. Haunted takes a comprehensive look at the years-long investigation, including accusations that Josh’s father, Steve, harassed Susan, which he has denied. Morrison also reveals how his interview with Steve in 2011 led to police obtaining a search warrant for Susan’s diaries.

Watch Dateline NBC tonight at 8 p.m. on KSL TV.