A recently divorced single mother, Yasuko Hanaoka, owns a restaurant and has a reclusive math teacher, Tetsuya Ishigami, as a regular customer. When Yasuko's abusive ex-husband shows up, he's killed by Yasuko and her daughter, and Tetsuya offers to help cover it up.
Suspect X
In a thrilling intellectual showdown, a brilliant but unorthodox physicist takes on a cunning and sharp-minded detective in a battle of wits.