Show alien forms at work (4,2,4)
I believe the answer is:
life on mars
'show' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'alien forms at work' is the wordplay.
'at work' indicates an anagram.
'alien'+'forms'='alienforms'
'alienforms' with letters rearranged gives 'LIFE ON MARS'.
Can you help me to learn more?
(Other definitions for life on mars that I've seen before include "A number" , "tune" .)