Unforgotten season four episode two saw Cassie and Sunny dig deeper into the murder from 30 years ago - but it looks like fans of Twitter are determined to solve the case before they get the chance to!
Using the popular hashtag, #UFTheory, viewers have been sharing their early predictions about the show - and we already think some of them sound quite promising. Taking to social media following the second instalment of the popular crime show on Monday night, one person wrote: "Definitely a parent link with all of the suspects - I think each of their parents was a police officer as well - maybe they got them off the hook the first time around?"
WATCH: Have you been watching Unforgotten?
Another added: "Body 30 years ago, new recruits years 30 ago and Cassie 29 years and nine months was she in the car probably not did she know them? #UFTheory."
Are you enjoying the new series so far?
A third person suggested: "Each of the four probationary cops has a body part hidden somewhere. They all seem somewhat suspicious and seem to know something but I am guessing at Liz being the killer - she was the most shocked and has the most to lose!"
Sanjeev Bhaskar, who plays Sunny, opened up about how much he loves the show on This Morning, explaining: "One of the things that I certainly love about it as a fan of the writing is the layers that [writer Chris Lang] puts into the scripts.
What do you think happened?
"This time it's about the relationships within the police. I'm still slightly shocked that I'm in it because I didn't expect when I turned up at the audition that I would get it."
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