The Missouri Department of Corrections provides for inmate searches on its website, Web.Mo.Gov. You can easily get to the necessary web page by going to TheInmateLocator.com and selecting Missouri from the list of states on the left side of the page.
After selecting Missouri from the list of states, select the red "Click Here" link beneath "Missouri Inmate Locator" just beneath the Google search box near the top of the page. This brings up the MODOC "Offender Web Search" page. Click on "Proceed to Offender Web Search" at the bottom of this page to perform the search. You can locate an inmate by entering his or her MODOC identification number or first and last name.