When an aggressive and deadly virus infects a demolition site in Pittsburgh, Dr. Hood is called in to contain a potentially lethal outbreak.
While on the verge of closing a case, Nash avoids getting killed in an explosion but loses a week's worth of memory as a result.
George agrees to make a donation to the Help Center if Louise can prove that there is some good in two youngsters caught breaking into the store.
A gunman leaves notes prior to committing crimes, baiting Steve (Barry Van Dyke) over and over again. With Dick Van Dyke.
Nash and Joe investigate a missing hockey goalie connected to the Russian mob, with the help of a kidnapper who has lost all memory of the crime.
