Show it's all true, strangely enough (10)
I believe the answer is:
illustrate
'show' is the definition.
(I've seen this before)
'it's all true strangely enough' is the wordplay.
'strangely enough' indicates anagramming the letters.
'its'+'all'+'true'='itsalltrue'
'itsalltrue' with letters rearranged gives 'ILLUSTRATE'.
(Other definitions for illustrate that I've seen before include "picture" , "Ornament" , "Exemplify" , "Show" , "Explain with pictures" .)