Come to a head (9)
I believe the answer is:
culminate
(Other definitions for culminate that I've seen before include "Come to a climax (in)" , "Wind up" , "Reach a climax" , "End" , "Bring to high point" .)
I believe the answer is:
culminate
(Other definitions for culminate that I've seen before include "Come to a climax (in)" , "Wind up" , "Reach a climax" , "End" , "Bring to high point" .)