Riverdale: Betty Cooper s sister Polly has returned for season 5. (Image: The CW)
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Polly has moved back in with mum Alice Smith (Mädchen Amick), along with twins Juniper and Dagwood.
She told everyone she had been working at The Roving Eye nightclub as a waitress, however, this was a lie as she had been spending time with the Goolies.
When Betty confronted her, Polly didn t admit to selling drugs for the gang as she stormed off but this is most likely how she is now making her money.
To try and rescue the town from further destruction and to help out her sister, Betty has agreed to stay in Riverdale for longer than initially planned.