Conclusion of amusing MC's blue tale of spooks (5,5)
I believe the answer is:
ghost story
'tale of spooks' is the definition.
(spook can mean a ghost)
'conclusion of amusing mc's blue' is the wordplay.
'conclusion of' indicates one should take the final letters.
'mc's' becomes 'host's' (an MC is a host or presenter).
'blue' becomes 'tory' (I've seen this before).
The last letter of 'amusing' is 'g'.
'g'+'hosts'+'tory'='GHOST-STORY'
(Other definitions for ghost story that I've seen before include "Frightful relation" , ". . . one such [SCARY TALE]" , "One giving creeps" .)