Do You Know What Happened to Cassy?

There was still water in the tub, so we pulled the drain. Black scuff marks, black from shoes, rubber, black rubber in the tub,. where did the scuff marks com from? From a struggle. They also found cassy's glasses and a hair ribbon near the broken towel rack. No one had bothered to collect them as evidence, so they did so. The family is a kind of c s i group. We were hoping to find some sign or clue to explain what happened to cassy. But they never imagined they'd find evidence that the deputies just left behind.