When a murder occurs, investigators want to quickly find the culprit for several reasons. One, they want to make sure that a dangerous person is not on the streets putting other people's lives in jeopardy. For another reason, taking a long time to bring murder charges does not reflect well on them. While most investigators do an excellent job ensuring they have arrested the correct person, mistakes do happen. An Illinois man, charged with murder in connection with his wife's death, is likely hoping to prove that accusations against him are actually a mistake.