CBR

Archie and his friends have returned to Riverdale for Pop Tate's retirement. 1 / 8

They all use that time to reconnect with their families. 2 / 8

Betty tries to patch things up with her mother and sister, but something terrible happens. 3 / 8

Betty's sister Polly is attacked by the series' new mystery assailant, a truck driver. 4 / 8

The truck driver appeared in last week's episode, preying on a poor young woman. 5 / 8

Now, there's a chance Polly is still alive -- but she is still in great need of help. 6 / 8

Luckily, as an FBI agent, Betty now specializes in serial killers. 7 / 8

Riverdale airs Wednesdays at 8 p.m. ET/PT on The CW. 8 / 8