Grapevine massacre victim sought divorce from gunman from ABC affiliate WFAA GRAPEVINE — We're learning more about the Christmas Day massacre in Grapevine that left seven people dead. Police Monday revealed that the gunman was dressed in a Santa Claus outfit and waited until the presents were opened to kill the victims and then himself. Neighbors confirmed to News 8 the identities of at least four of the victims in the tragedy. Grapevine police say it was an apparent murder-suicide that took place right after a Christmas celebration, and say the shooter was wearing a Santa suit when he got...