At the halfway point of the gripping maritime crime series, the finger of suspicion seems to be pointing ever higher up the chain of command
Spoiler alert: this blog is for those watching Vigil on BBC One. Don’t read on unless you have watched episode three.
The morally murky submarine drama – AKA Line of Boaty, AKA 20,000 Leads Under the Sea – reached its midway mark, with MI5 and the pesky Pentagon making their presence felt.
