 Comparing Scarlet and Blue's "[creeping] about the temple looking for clues" to an episode of "Scooby-Doo", he also commends the episode's use of point of view shots and "echoey footstep" sound effects, as well as its presentation of Scarlet and Blue's "comradeship".He argues that as in other episodes where the Mysterons prevail, Spectrum's defeat adds to the tension by creating an "'anything can happen'-type feeling".Commentators Chris Drake and Graeme Bassett suggest that SKR4 being under the control of an agency called Euro-Space shows that the episode's writers were "keen to establish the existence of a European space operation in addition to the obvious American space programme".