Missouri landlords must follow specific rules and procedures when evicting a tenant (see the article How Evictions Work: What Renters Need to Know, on this site). The state forbids landlords from taking the law into their own hands. Examples of illegal “self-help” evictions include changing the locks, removing the front door, or turning off the heat or electricity—all of which may be the basis for a tenant suing a landlord for damages. Damages are determined by the court in Missouri.
If you decide to sue your landlord for an illegal eviction, check Missouri law (the legal authority for Missouri rules prohibiting self-help evictions is Mo. Rev. Stat. § 441.233 and Steinke v. Leight, 235 S.W.2d 115 (1950)). See the Laws and Legal Research section of this site for advice on finding and reading case law.
It’s also a good idea to get advice from a local tenants’ rights group in Missouri. The U.S. Department of Housing and Urban Development (HUD) website includes information on tenant advocates for each state.
Finally, consider consulting an experienced tenants’ lawyer. See the article Tips on Hiring and Working With Lawyers on this site for advice.
For a wide range of other articles of interest to tenants, see the Renters’ and Tenants’ Rights section on this site.