Topics and Guests for May 21 & 22

Watch "The Big Story Weekend" Saturday and Sunday at 9 p.m ET

Idaho police dismissed a tip they received Friday when it proved inaccurate and continue to look for Dylan and Shasta Groene whose mother, brother and a family friend were murdered earlier this week. Is there a possibility that more than one person was involved in the murders? We'll get the lowdown from Dr. Robert West, Kootenai County corner, Sheriff Rocky Watson of the Kootenai County Sheriff's Department, and Sgt. Andy Boyle of the Kootenai County Dive and Rescue Team.

Then, how are the family and community holding up? We'll talk with Bob Price, Shasta and Dylan's uncle, and Sheri Havesham, a neighbor of the missing kids and murder victims.

CBS is set to air its made-for-TV movie "Amber Frey: Witness for the Prosecution" on Wednesday, which is based on the book "Witness" by Amber Frey (search). We'll get the inside scoop on the movie from Amber Frey herself.

Plus, we'll have a recap of the wild week in the Michael Jackson (search) trial. Is the defense close to resting its case?

We'll hear from:
• Debra Opri, Jackson family attorney
• Jim Hammer, former prosecutor
• Roger Friedman, columnist