2nd wife’s suspicions confirmed with ex-husband’s arrest for murder
"20/20" explores the 13-year investigation into Heidi Firkus' murder, including an exclusive interview with the suspect's ex-wife who helped investigators. It was a case that kept St. Paul, Minnesota, investigators up into the night – as they worked to bring justice to a family over 13 years. In the early morning of April 25, 2010, 911-dispatchers received a frantic call from Heidi Firkus, 25. "Someone's trying to break into my home," Heidi Firkus told the dispatcher in audio obtained by ABC News. The call ended abruptly with a loud noise. Just 65 seconds later, another call came in – this time from her husband, Nick Firkus, 27. "My wife is shot, somebody broke into our house," Nick Firkus screamed into the phone. "I've been – shot." Rachel Firkus speaks with "20/20's" Deborah Roberts about her ex-husband's murder conviction. ABC News MORE: Video New '20/20' details secret affair and sinister plot for mur...