All the usual disclaimers apply: I don't own Castle, never will, and certainly have no chance of ever profiting from it.
My muse pointed out to me that this is essentially a companion piece to "Lucky" and "Near". The three combine easily to make a trilogy of sorts.
Ozone
She can feel the storm brewing for days before it finally arrives. It announces itself in fits and starts, flaring up suddenly before calming just as quickly. The last lull is mercifully brief. The atmosphere has been hushed and heavy for too long, and it's almost a relief when the stillness is finally broken.
Once it begins in earnest, it builds rapidly in intensity—worse than she'd hoped, but not as bad as she'd feared. When it blows itself out, everything seems fresh and full of new possibilities.
Josh is gone. One and one and one was one too many.
A/N: This site won't let me do subscripts, but ozone is a triatomic molecule; its chemical formula is O3. Ozone is far less stable than its diatomic counterpart, O2. This ends our chemistry lesson for today ;-)