Article continues below advertisementBilly Crystal and his wife, Janice Crystal, are mourning the loss of their longtime friend Rob Reiner, after the actor and his wife, Michele Singer Reiner, were murdered.In a joint statement released two days after the tragedy, Billy and a close circle of Hollywood friends paid tribute to the filmmaker's lasting legacy - both on screen and off.Article continues below advertisementSource: MEGABilly Crystal honored Rob Reiner and his wife in a moving statement.