collin strickland know his phone number? i can call him. >> more body cam video shows local police breaking the tragic news about mo's death to collin. >> do you know? anna? mo? she's a gravel rider. yes, i do. there's really no easy way to say this, sir. so apparently last night she. she passed away. how did. and she. right now it's an open investigation, but it is being investigated as a homicide. well, thank you. okay. yeah. >> and collin, expressionless over the news or simply in shock. swider. the next day, caitlin armstrong is brought in for questioning. the ex yoga instructor is calm and cooperative until she's confronted with details about her relationship with collin. >> i'm sorry if i have an existing warrant and you don't know what it's about. do i need an attorney here? >> caitlin was facing a warrant for her arrest on a misdemeanor theft of service charge for failing to pay for botox treatment. but now cops have questions about mo's murder. >> did you hear about what's happened over the past 24 hours? >> collin w