Mind reader's skill, for short (3)
I believe the answer is:
esp
'mind reader's skill for short' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for esp that I've seen before include "Apparent power to perceive things that others can't, in short" , "Initially, clairvoyance or telepathy" , "Extrasensory perception (abbrev.)" , "Apparent power to perceive things that others can't, initially" , "Second sight (abbr)" .)