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'Yoga Teacher Killer: The Kaitlin Armstrong Story's Caity Lotz and Kyle Schmid Talk Shocking True Crime

'Yoga Teacher Killer: The Kaitlin Armstrong Story' airs on Lifetime on June 15.

Married actors Kyle Schmid and Caity Lotz are teaming up for their new Lifetime movie, Yoga Teacher Killer: The Kaitlin Armstrong Story, and sharing what it was like transforming into the real-life inspirations of the film. Sitting down with ET's Kevin Frazier in an exclusive interview, Lotz and Schmid opened up about everything from the beginning of their relationship to the new project, which tells the true story of Kaitlin Armstrong, a yoga instructor turned killer. As the case played out fairly recently in the courts -- Armstrong was found guilty of first-degree murder in November and sentenced to 90 years in prison -- the couple gave credit to the film's writer-director Katie Boland, who they say tastefully tackled the source material.

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