If a valid prenuptial agreement is in place, its terms will generally dictate the division of property, spousal support, and other financial matters in the event of a divorce. The court will typically enforce a valid prenuptial agreement unless it finds that the agreement was entered into under duress or fraud, or the agreement’s terms are deemed unconscionable. An important caveat to be aware of here is that, under Missouri law, prenuptial agreements cannot set out arrangements for child custody or support; these must be decided at the time of the divorce.