John Bennett Ramsey — the father

The theories that JonBenét 's parents committed the murder often stem from their strange behavior after the fact, and the lack of footsteps of any kind in the snow surrounding their home.

John Bennett Ramsey found his daughter's dead body in the basement wine cellar, and carried her upstairs. He removed the tape from her mouth, and covered her in a blanket, which could have destroyed important evidence.

In 2008, Patsy and John Ramsey were officially cleared of any involvement in the murder due to DNA evidence.

Source: Rolling Stone