Seeing in the Dark

"Seeing in the Dark" is the 832nd episode of Casualty and the 10th episode of the 27th series.

Synopsis
The decision to go public with the E-coli outbreak leads to an influx of panicking patients worried they have been infected, and before long the ED is struggling to cope. Zoe has no regrets about speaking to the press, however, and becomes determined to find the source. A young man's inexperience on his motorbike has devastating consequences for his girlfriend, while Tom and Sam get closer at the staff Halloween party.