Weiss (D) and others assisted a New Jersey detective in the investigation of the Lindbergh murder case. D helped the detective seize a defendant in order to extort a confession from him. D claimed that the detective had assured D that all of this activity was within the law. D was charged with kidnapping. At trial, the court excluded evidence that the detective had told D that he had the authority to make the arrest. The trial judge held that good faith was no defense to the charge of kidnapping. D was convicted and appealed.