S6E5 Undertow: Part 1
Banks and the team begin the painful
job of finding out exactly who was responsible for the incident that has
affected all their lives.
Following dogged police work, they
locate and close in on a suspect, only to be thwarted when it's proven
there's no way they are to blame. While Chief Superintendent Anderson
puts pressure on Helen to reign in Banks and close the case, Banks
becomes increasingly certain that this is all down to one man – crime
boss Steve Richards. Banks' obsession with nailing Richards sends him
over the edge, resulting in Anderson exiling him from the station and
making Helen acting DCI in his stead.
First Air Date: 09/28/2016