Conversation so far:
when does alex come back on orange is the new black
In Orange is the new Black, Alex comes back to Litchfield in season 3 after getting arrested again and in season 6, after recovering from injuries due to the riot.
why did alex vause get arrested again
Alex Vause got arrested again because Piper convinced Polly to inform Alex's probation officer of her plans to skip town, violating her probation. Alex had a gun when he arrived.

Question: what about the first time
Self-contained rewrite: why did alex vause get arrested the first time