This creepingly slow space drama was mainly conceived, I'd posit, as a showcase for the acting talents of the four leads: we're treated to Hackman, Crenna and Franciscus playing the astronaut trio trapped in space, and Peck as the no-nonsense controller back on the ground whose attempts to return them to Earth make up the bulk of the running time.

Sadly, 'bulk' is right when it comes to this movie: it's way overlong, with much of the length consisting of repetitive dialogue sequences or scenes which add little to the narrative. In some cases, it actually feels quite stodgy, especially during the lengthy mid section. I was often looking at the clock and wondering how much more of this I could sit through.

Invariably, the special effects are quite dated and often look laughable in this day and age. Yet despite these detractions, the film does have a special kind of timeliness to it (considering the year it was made) which adds significance to the production. And I'll admit that things do get quite thrilling in the last half hour, when we're treated to the kind of suspense that should have been present all the way through.

The actors are the main reason to tune in these days: it's hard to fault any of them, but I think Crenna gives the best performance of the lot as a compassionate family man. Hackman is almost unrecognisable in comparison to the later tough, mannered character actor he became, and as always Franciscus seems to me to be underrated. Peck is very good too, but then that's a given.