Directed by former stuntman Ray Austin, this is an episode filled with dark undercurrents and menace. Brian Blessed excels as Cabot, a charismatic madman driven by his dream of escaping from the planet aboard Alpha. This is a serious adult drama and shines out as an example of the high standard the series could achieve when it tried. Rating 10/10
(Anthony McKay, DWB, 1992)
A great script, with great direction and great thespians are the hallmarks.
(Richard Houldsworth, TV Zone, 1992)
A chilling episode (in every sense) with bravura performances from Brian Blessed and John Shrapnel and a genuinely shocking twist in the tail. A+
(Chris Bentley, SFX 20, 1996)
By turns mysterious, tragic and involving, this Shakespearean story explores the possibility of human immortality and culminates with a shocking climax.
(John Kenneth Muir, Exploring Space: 1999, p58)
Good direction by Crichton elevates this standard show. **- (average)
(James O'Neill, Sci-Fi On Tape, p270, 1997)
Perhaps the most brilliant individual guest appearance in the entire series comes from John Shrapnel. He is flanked in all directions by outstanding performances from all the other Thulians and Alphans. Ultima Thule is a totally believable frozen world, and the caverns a model of art direction, design and construction. Landau gives one of his strongest performances here, showing a leader at odds against an adversary he doesn't understand, and at the same time lacking the usual support of his closest comrades. 10/10
(Bob Wood, The Future Is Fantastic, 2001)
This is another "lost crew" story, but a fun and surprisingly dark one. 3/5
(Alasdair Stuart, SciFiNow #10, 2007)