Sanctuary Season 3 Episode 3 (Sanctuary s03e03) with title “Bank Job” aired on Friday, October 29th 2010 at 10:00 pm via Syfy Network.
Here is summary for Sanctuary Season 3 Episode 3 :

Magnus and the team go to a bank to retrieve an Abnormal that was stashed in a safe deposit box, which not only hatched prematurely but also escaped, prompting Kate to enforce a less-than-subtle quarantine of the bank’s customers.