he is taken to the gate’s keep

lace stays with him (or sneaks off to be with him)

to the build up of the founders providing the evidence that cadence is the mole atom his brother begins to feel heavily pressured that his own brother could do such a thing

it hurts when the person you trust the most doesnt believe you

as atom orders him to be taken away he says the he will look after his daughters — and so perhaps the first summon that atom ever seals himself is the summon that sets his brother away — he makes a request to the founders that cadence be sent away to the gatekeeepers

dawce being someone who went against the founders is also perhaps this is another reason they blame cadence for being the mole as for allowing her to sit on these meetings in the first place and have teh chance to steer things like this