McGarrett must protect a protect a mob underboss so he is able to testify against his superior, Joe Matsukino. However, Matsukino has many tricks up his sleeve to silence his former colleague permanently.
| Name | Type | Role | |
|---|---|---|---|
| Shirl Hendryx | Writer | ||
| James Shigeta | Guest Star | ||
| Sammi Fu | Guest Star | ||
| Kent Bowman | Guest Star | ||
| Maura McGiveney | Guest Star | ||
| Robert Turnbull | Guest Star | ||
| Ted Hard | Guest Star | ||
| Daniel Leegant | Guest Star | ||
| Tuuliki Gottschalk | Guest Star | ||
| Ruth Blacker | Guest Star | ||
| Nehemiah Persoff | Guest Star | ||
| Randall Kim | Guest Star | ||
| Herschel Daugherty | Director |