Episode 6878

Sienna arrives at Brennan's house to explain herself. She's here to tell the Police the truth – her alibi was fake, but she's innocent. Her story convinces Mark to accompany her to the Police station. Paul sees she's in town and harasses Matt, who he wants to arrest Sienna. But Matt doesn't have the evidence. Driven by guilt, thinking he goaded Sienna into killing Kate, he sinks into depression.