Michael's affair leads detectives to investigate his alleged mistress Sheila; a lead on the costume from a store puts Sheila firmly in the frame, but without evidence the case goes cold; then in 2017, new DNA evidence leads detectives to an arrest.
After Sheila's arrest, the prosecution prepare for trial and the stakes are high; the prosecution's case centers on new DNA and fiber evidence; Sheila's defense attorney attempts to get the evidence thrown out.
In this shocking true story that gripped America, a wife and mother is gunned down on her doorstep by a clown.