Heather Mack pleads guilty to mother's murder in Bali and Chicago.

Heather Mack pleaded guilty to conspiring to kill her mother during a vacation to Bali in 2014. She struck a deal with federal prosecutors that would cap her prison sentence at 28 years, but key questions remain, including whether the judge will credit her with the seven years she spent imprisoned in Indonesia. Mack's sentencing hearing is set for December 18. Her mother's body was discovered in a suitcase outside a Bali resort, and prosecutors allege that Mack and her then-boyfriend plotted to enrich themselves with the proceeds of her $1.5 million estate.