Diary of A Gun is the 23rd episode of Season 7 in the original version of Hawaii Five-O
Synopsis[]
A mysterious .25 caliber "Saturday night special" causes citizens to kill which leaves a bloody trail of four murders;an accidental shooting, a mugging and a car hijacking, two holdups and misery. Five-O must find the gun and uncover the gun smugglers to stop the carnage.
NOTE: Al Harrington does not appear in this episode. Final appearance of the character Frank Kamana.