This is the first episode that uses the introduction tag line, "and when they met, it was murder."
The parking lot used in the final chase has been used in Rockford Files, NCIS, NCIS:LA and also on CSI. Its not surprising as all four shows are filmed in same area and back-lots.
This is the first time that a headboard is shown on the Hart's bed.
When the elevator button is pressed by Sid Haig, it makes a Star Trek sound effect. Sid had also appeared in an episode of Star Trek.