IMOO they were asking for a friend, family member, co-worker, acquaintance, etc. to contact them with THE tip...the tip that would break this case wide open by putting this individual either at the scene or with noticeable changes in behavior or appearance or that the individual had confessed to them. Not necessarily tips on MORE individuals. They believe they know who did this, I now think. Shout out to Dr. Phil for making this program a whole hour long and getting the word out there for A&L. They need justice.