Survivors' haunting texts in Idaho. Questions for a New York prosecutor. And a spring break mystery.

Listen to this week's episode of the Dateline: True Crime Weekly podcast with Andrea Canning. Unsealed court documents reveal chilling texts sent by the roommates of four murdered Idaho students. The family of a young woman murdered in New York wants to know why the arrest of her suspected killer took so long. And we've got an update on the investigation into a student who went missing from a beach in the Dominican Republic. Plus, what's fair game when attorneys call on expert witnesses? Find out more about the cases covered each week here:www.datelinetruecrimeweekly.com