One took to Twitter to say: “I am guessing that Kate is deep undercover and only Hastings knows #LineOfDuty.”
Another echoed this view, saying: “Ted is hating on Kate too much. Is she secretly undercover/in cahoots with him without Steve’s knowledge and trying to gain Jo’s trust to blow the whole thing wide open? Face with monocle #LineofDuty.”
One said: “What is going on with Kate??? We’re going to end up with some Inception-level of undercover here aren’t we? How are we supposed to keep up with these twists AND follow on Twitter at the same time?! #LineOfDuty.”
Viewers will have to wait until tomorrow to see what might happen with Ted and the rest of the team, but as with every episode, will probably be left with more questions and speculation before getting solid answers.
Could this series really see the end for Ted? And is Kate in too deep?
Line of Duty returns to BBC One on Sunday at 9pm.