Okay. This show blew my mind.
I decided to collect a few questions and unclear moments in this post. Some of them are my own observations, some I saw in the reddit community. So I give credit to the attentive guys there.
Warning: spoilers.
Social worker Lucy's loop. S1 vs S2.
Lucy's mother's suicide time is 3.33 (the devil's hour). Gideon arrives early to break the shotgun. At 3:34, Sylvia hears little Lucy calling her and quickly hides the shotgun in the closet.
In S2 after Gideon breaks the shotgun the clock already shows 3.34. The writers are very attentive to time. So this discrepancy is shown on purpose. The third loop?
2. Detective Lucy's Loop. S1 vs S2.
Flashback from S1, Gideon's coat, all the buttons are there.
S2, the top button is missing. But Gideon hasn't saved Lucy's mom in this loop yet. Again: there is a third loop. Either Lucy can see into the future. Or "the walls of reality are collapsing", the loops are tangled together, boring.
3. Isaac's watch
The most obvious discrepancy, so the explanation will definitely be in s3. Adult Isaac's watch and little Isaac's watch show different times.
Also, little Isaac wears a watch at his first appointment with Ruby.
4. Old Gideon in prison. S2 E1 vs S2 E5.
Who is "he"? Isaac? Ravi?
5. Flashbacks at the end of S1 E6
Why isn't Gideon handcuffed? Why is Lucy coughing? She shouldn't remember the fire yet. Or is it just the effects of smoking, lol?
6. Gideon's pickup
Here it is next to the blue Subaru during the stakeout.
And at the same time, it`s next to Sylvia's house.
7. Handwriting
How did Gideon know that Ravi would also make a comment about the handwriting? Why is Gideon so insistent that he "knows" Ravi? If he was caught by Lucy in previous loops, and Ravi was in the hospital at the time? Meanwhile, Gideon doesn't know Nick personally, even though Nick works with Lucy and Ravi.
8. Ravi's bracelets
In S1, Ravi wears one bracelet, in S2 a second one is added. It looks a lot like the red cord from the interrogation room. Even if it's not the same cord, it's very Ravi's style to wear something like that as a reminder of his failure. But in Detective Lucy's loop, he also wears a red bracelet.
9. Lucy's earrings
This may have been a costume designer's mistake, but it's still funny.
Lucy has one pair of earrings in the scene near the burning house, and another pair in the scene with Isaac.
10. Bloody stain
Why can Evelyn see a bloody stain on the ceiling in Sylvia's house? In the parallel reality, it was cleaned if people live there.
I agree with the theory that the yellow hoodie is Jonah. Jonah is the dark side of Gideon's activities, Isaac is the light side. Steven Moffat didn't write this script, but I think the theme of motherly love conquering evil and chaos should play a role until the end.
I really hope there will be an explanation as to why Sylvia shot herself, and why at 3.33.
How will the story end for Gideon? I guess I would like him to try to talk his father out of it instead of killing him. Sentimental? Maybe. But season two was already very, very sentimental, so... And Lucy will take over from him as a killer maniac, ahaha.