- Country: France, Italy, Spain
- Genres: Sci-Fi, Thriller
- Release: 1966-08-28
- Director: Giorgio Stegani
- Writers: Remigio Del Grosso , José Luis Martínez Mollá , Giorgio Stegani
- Language: Italian
- Stars: Luis Dávila , Gaia Germani , Alfredo Mayo , Alfredo Mayo , Jesús Puente , Janine Reynaud , Alberto Dalbés , Nando Angelini , Luciano Pigozzi , Benito Stefanelli , Fernando Bilbao
- Runtime: 100 min
- Awards: N/A
- AKA: Ypotron, epiheirisis aktines thanatou (Greece) , Ypotrón (Spain) , Mission secrète pour Lemmy Logan (France, French Republic) , 077 gegen Ypotron , Operação Ypotron (Brazil) , Ypotron , Operation Y (Ireland) , Agente Logan - missione Ypotron (Italy) , Agente Logan - missione Ypotron , Mike Murphy 077 gegen Ypotron , Ypotron - Final Countdown (United States of America) , S077: Operación relámpago (Spain) , Knaldhårde drenge fra F.B.I. (Denmark) , Ypotrón el agente del diablo (Mexico) , Operation 'Y' (United Kingdom)
- Plot: Doctor Morrow, a scientist who works for NASA, has mysteriously disappeared and the agent Lemmy Logan is in charge of the case.
- IMDB:tt0059935
Ypotron – Final Countdown Cast · · · ALL
Giorgio Stegani
Director
Luis Dávila
Lemmy Logan
Gaia Germani
Jeanne Morrow
Alfredo Mayo
Morrow / Leikman
Jesús Puente
Wilson
Janine Reynaud
Carol
Alberto Dalbés
Revel
Luciano Pigozzi
Strike
Nando Angelini
Tecnico del video
Benito Stefanelli
Il sicario Dwan
Fernando Bilbao
Goro
Xan das Bolas
Il portiere dell'hotel
Mary Paz Pondal
Conchita
Alan Curtis
Streich
Dina Loy
Segretaria