<Li> Charlotte was the one who overlooked the grave robbing in "Dead to Me". </Li> <Li> Sara got off the plane at Thornhill and rescued Aria, Mona and Emily, while Alison rescued Hanna in "A dAngerous gAme". </Li> <Li> Sara's coat was the one found in the rummage at Thornhill in "' A' Is for A-l-i-v-e". </Li> <Li> Charlotte was the one who filmed a video of herself wearing the red coat and an Emily mask in "Under the Gun". </Li>

Who is a and who is red coat