I've just watched it (in 2025) & quite enjoyed it and then it occurred to me, hang on, how did Leanne come to have Calvin Sarwar's email address!??
Now I'm out off watching any of the other episodes but might just plod on with it because the scenery is worth it!!!

I liked the episode. You nailed the plot line. In my opinion, the character, Lena, just didn't care about Robbie or Michael. I do have one question. It's not too important but bugs me. How did Lena know Asha's room number? I know Jimmy told her the hotel, but if I didn't miss something, we just have to assume the front desk told or an employee gave Lena the number.

But I agree with you.
Just finished Series 3 of The Fall. Starting River.
Looking for The Tunnel. I haven't actually seen The first series of True Detective, so I'm looking forward to that. I've heard it's fantastic.

Now I'm sad because I've finished Season 3 and don't know where to go from here.
I think
Case Histories
isn't dark enough for
Shetland
withdrawal. You might like
River
, or
Bron
, or
The Tunnel
, or
Collision
(miniseries w D.Henshall).
Also, tastekid gives suggestions for similar shows, movies music, etc.:
https://www.tastekid.com/shows/like/shetland
https://www.tastekid.com/shows/like/hinterland
"All you need to start an asylum is an empty room and the right kind of people."

Have you watched Hinterland?
No. I'm in the U.S., and we don't get that here. I'm so thankful our PBS has shown
The Tunnel,
which, for its plot, subplots/red herrings, complicated characters, and stellar acting, is my most recent favorite.
Meryl Streep is a shape-shifter.

Have you watched
Hinterland
?

This message has been deleted.

I know the feeling.
Meryl Streep is a shape-shifter.

Just discovered the series. Now I'm sad because I've finished Season 3 and don't know where to go from here.
Case Histories, I guess.

Thanks for taking the time to write that,
Ciaobaby
. Did you watch the series more than once or read the book?
Meryl Streep is a shape-shifter.

I think it's all in there, but deliberately understated.
Lena enters the witness protection program with her mother. As both Perez and Asha will remark, later on, it's a trying, lonely experience. It follows that, following her mother's suicide - which she blames on the program and Asha - Lena is emotionally damaged, traumatized and disturbed.
Lena ends up working as a chambermaid in the same Aberdeen hotel where Asha will conduct clandestine meetings with Michael. When she recognizes Asha and figures out that Michael is another witness protection client, Lena takes to following him with the intention of using him him to somehow draw Asha away from the relative safety of the big city. Michael leads Lena back to the Shetland archipelago where she grew up.
Lena doesn't know who Robbie is. She never plans to cause Robbie's death or Michael's death. When presented with an opportunity to leave Robbie stranded in a container after his very public falling out with Michael, she shuts him in - hoping that he will be missing long enough to cast suspicion on Michael and draw Asha out. Because of her obssession, she doesn't waste time imagining the consequences if Robbie isn't found in time. And she doesn't lift a finger to help him as time goes on, because she's fixated on messing with Michael.
When things don'thappen fast enough to suit her - despite her constant presence and nagging - she attempts to provoke a faster response by contacting Arthur McCall's organization. She is making an educated guess about that, based on her mother's experiences, because Asha and Michael have been meeting regularly and a likely explanation of that would be McCall's sensational and looming high profile trial. She doesn't have to contact the crime boss. She contacts the office of his equally high profile lawyer who is notorious precisely because of that connection to McCall. Easy enough to find on the internet.
She doesn't appear to have intended that Michael be killed any more than she intended that Robbie be killed. They both are simply collateral.
When Michael follows her to the ruins of a farm (and the assassin follows Michael), he doesn't know she's actually
visiting the site of her childhood home. She's not actually luring him.
The more I'm thinking about this season, the more I'm liking it. Lena's unfocused vendetta sets many different tragedies in motion and exposes multiple conspiracies. And the more I look at it, the more i am struck by the intricate plotting.
.

While I agree it is a big plot hole, I have to wonder if Lena emailed Calvin because he was a high profile lawyer in Glasgow known to defend McColl. It suppose it was assumed to be a high profile case.

I saw other explanations on this board, but the notion that
Lena set up a mob hit by using Google on the library computer
is beyond dumb.
With all its plotting problems, I have to wonder whether S3 began life as another 2-parter like previous seasons, but BBC execs liked it so much they wanted to stretch it out by adding more and more plot threads to fill 6 hours? Unfortunately, there were so many characters and subplots one wonders if any satisfying conclusion was possible?
In the end, S3 will be memorable for its characters and scenic locations and for the exceptionally empathetic handling of the subplot involving Tosh. As for the rest of the plot, I've forgotten it already

Yes, as many posters have already mentioned, S3 finale is a huge letdown and contradicts its earlier set-ups.