McGarrett must prevent a mob war by tracking down an unknown hitman and his intended target.
| Name | Type | Role | |
|---|---|---|---|
| Martin Roth | Writer | ||
| Sal Mineo | Guest Star | ||
| Tommy Sands | Guest Star | ||
| Tony Martini | Guest Star | ||
| Darcy Cook | Guest Star | ||
| David Horcajo | Guest Star | ||
| Seth Sakai | Guest Star | ||
| Patt Patterson | Guest Star | ||
| Jerry Waialae | Guest Star | ||
| Nehemiah Persoff | Guest Star | ||
| Rudolfo Aquino | Guest Star | ||
| Les Freed | Guest Star | ||
| John Peyser | Director |