Mary Collins is the main antagonist of The Dragon’s Call (the first episode of the first series of BBC’s Merlin). She swears to kill Arthur to avenge her son, who had been executed by Arthur’s father, Uther. She poses as Lady Helen, Camelot's greatest singer. Fortunately, Merlin saved Arthur from her attempt by dropping the chandalier on top of her and later pushing Arthur away before he fell victim to her blade.