April 29, 2010 1:16 pm Sisters' Motel Murder Investigation Investigators talk about what they do know in the double murder case of two sisters shot dead at a Berks County motel where they both worked. US & World Videos 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 1:30 Protests calling for ceasefire continue at Penn 6:33 Family affair: Former Eagle and new Eagle Jeremiah Trotter and Jeremiah Trotter Jr. speak out 0:20 Teen girl shot in Southwest Philly, suspect in custody 0:27 FBI inspects American Airlines plane at PHL after bomb threat