Today is Friday the 13th! In honor of this, we invite you to recall one of the mysterious cases in the Nancy Drew collection. That's what the young detective faced this time:

The Crystal Skull is an artifact with a power believed to protect its possessor from death. Recently its owner, Bruno Bolet, died and the skull disappeared. While few know about Bruno's missing prized possession, all seek it for personal gain. Now it's up to you, as the vacationing Nancy Drew and Bess Marvin, to join the hunt for this legendary relic.