It's past midnight and everyone in the lab feels tired and sleepy. Everybody wants to go home and just let their heads hit the pillow. But this case is a difficult one.
'And then he, uh...' Peter begins for the hundredth time trying to come up with another theory that would make sense, but trails. 'He... he kinda...'
Olivia and Astrid look at him hopelessly, bags under their eyes, Olivia's skin pale as paper and Astrid's going some weird greenish brown. Peter seems to be the one who wants to go home the most.
'I think we should call it a night', Astrid says with a huge sigh after she spots Walter who is already fast asleep in a chair.
They all go home, Peter carefully taking his father to the car, barely waking him up in the process.
And then there's a phone call in Olivia's apartment at 4 in the morning.
'Livia!' Peter barks into the speaker making her flinch and put the phone away for a few seconds. 'I know how he did it!'
And then she smiles.