Lucie Adams

In the novel Lord Edgware Dies, Lucie Adams was the younger sister of the American impersonator Carlotta Adams. She lives in New York.

Before Carlotta died, she had sent Lucie a letter in which she had indirectly exposed the murderer (possibly). However, she was not willing to give the police the original letter unless it was absolutely necessary, but she gave an officer a copy of it. She told Scotland Yard she had already given the original to Hercule Poirot—this was not true, but she wanted to keep the real one because it was her sister's last words to her.

Lucie claimed her sister did not take any type of sleeping draught.

Portrayals
She was portrayed by Aliza James in the ITV TV adaptation which formed part of the series Agatha Christie's Poirot. Here she already had an appointment with her sister, but went to Carlotta's home without knowing of her death. The maid later told her about it.