Jaime de Guzman, a military neurosurgeon, survives a massacre that killed his wife and daughter. He hunts down all perpetrators and is able to kill them except the boss. From returning to a normal life and to the death of a girl after performing a brain operation to her, he hides his guilt to his new life.
Unfortunately the movie Ang Dalubhasa is not yet available on HBO Max.
| Writing | Manny R. Buising | Screenplay |
| Directing | Fernando Poe Jr. | Director |
| Writing | Fernando Poe Jr. | Story |
| Writing | Pablo S. Gomez | Screenplay |
| Editing | Augusto Salvador | Editor |
| Production | Roger Vivero | Supervising Producer |
| Production | Jesse Ejercito | Executive Producer |
| Camera | Ver Reyes | Director of Photography |
| Production | Jinggoy Estrada | Executive Producer |
| Production | Susan V. Tagle | Line Producer |
| Art | Martin Masadao | Production Design |
| Art | Rolando Sacristia | Art Direction |
| Production | Eric M. Cuatico | Producer |
