Beatle's back in USSR, playing tricks (5)
I believe the answer is:
ruses
'tricks' is the definition.
(I've seen this before)
'beatle's back in ussr playing' is the wordplay.
'back' says to take the final letters.
'in' is an insertion indicator.
'playing' indicates an anagram.
The final letter of 'beatle' is 'e'.
'ussr' is an anagram of 'russ'.
'e' put inside 'russ' is 'RUSES'.
(Other definitions for ruses that I've seen before include "Clever plans designed to deceive" , "Tricks or deceptions" , "Clever strategems or plans" , "Stratagem designed to deceive" , "cunning tricks" .)