Cassie is a con artist and according to Sherlock Holmes one of the best liars he's ever met.
|Watson and Holmes meet Cassie while investigating a case of a girl, Mina Davenport, who returned to her family after being kidnapped for over ten years. Sherlock deduces that Cassie has been posing as Mina. Cassie meets them in private and tells them that Mina was killed by her parents and that she will help them prove it as long as they don't reveal her secret as it will allow her to access Mina's $5M trust fund. Holmes tricks her into planting a bomb in the Davenport's home which allows the police access to DNA and they find the blood of a missing FBI agent in a car. All are incredulous that the DNA test shows Cassie is related to the Davenports but Holmes is able to deduce that Cassie found the real Mina and took her hair just before Cassie was "found". Cassie is arrested and while in a holding cell, she confidently tells Holmes that she believes she will be able to lie her way out of the situation in court. ("Miss Taken")|