A Missouri Affidavit & Petition in Unlawful Detained is a legal document that is used by a landlord or tenant to begin the process of evicting a tenant from a rental property in the state of Missouri. The Affidavit & Petition must be signed by the landlord or tenant, and must include details such as the address of the rental property, the amount of rent owed, and the length of time the tenant has been delinquent in payment. The Petition must also include a statement of the landlord's or tenant's case. There are two types of Missouri Affidavit & Petition in Unlawful Detained: one for forcible entry and detained, and one for non-payment of rent. The forcible entry and detained petition is used when the tenant has illegally entered the property or has not vacated the premises after the lease has expired. The non-payment of rent petition is used when the tenant has failed to pay rent for the rental property. In both cases, the landlord or tenant must provide proof of their claims in order for the court to grant the eviction. If the court finds in favor of the landlord or tenant, the tenant will be ordered to vacate the premises or face further legal action.