Akademik

fall into place
verb
become clear or enter one's consciousness or emotions
-

It dawned on him that she had betrayed him

-

she was penetrated with sorrow

Syn:
click, ↑get through, ↑dawn, ↑come home, ↑get across, ↑sink in, ↑penetrate
Cause: ↑understand
Verb Frames:
-

Something ——s

* * *

(of a series of events or facts) begin to make sense or cohere

once he knew what to look for, the theory fell quickly into place

* * *

fall into place
: to fit together : to make sense

The pieces of the puzzle/mystery are finally starting to fall into place.

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Main Entry:fall
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fall into place — see fall, 1
• • •
Main Entry:place

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fall/slot into ˈplace idiom
if sth complicated or difficult to understand falls or slots into place, it becomes organized or clear in your mind

Then I found his diary and it all began to fall into place.

Main entry:placeidiom

Useful english dictionary. 2012.