False imprisonment is the unlawful confinement of a person without his or her valid consent. (1) A person is guilty of unlawful imprisonment if he or she knowingly restrains another person.(2) Unlawful imprisonment is a class C felony. If you are dealing with issues pertaining to kidnapping or false imprisonment, do not hesitate to contact a Spokane criminal defense lawyer from our firm. Unlawful imprisonment is considered a Class C felony. Under Washington law, RCW 9a. Plaintiffs filing a false imprisonment claim against the D.C. government must establish they have been exonerated of the crime they were imprisoned for. If someone served time in Washington State on a simple drug possession, can they use it for wrongful imprisonment since the Blake law has passed? False imprisonment occurs when a person intentionally and illegally restrains another person's ability to move freely. False imprisonment is a Class C felony.