Which arc do you think it will be season 1 finale?

The first two chapters were quite long I think, thus it being one episode per chapter was kind of predictable.
I think from now on it will cover 2 or more chapters per episode.

Ep 3 would be the hot spring case (ch 3, 4)
Ep 4 the hand collector case (ch 5,6)
Ep 5 the Live Broadcast case (ch 7,8)
Ep 6+7 the Observatory case (ch 9-13)
Ep 8 the poisoned Latté case (ch 14,15)
Ep 9 the Mad Chameleon case (ch 16,17)
Ep 10+11 the Yamagami case (ch 18-21)
Ep 12+13+14 the Shibuya case (ch 22-27)

Because the anime only has 13 episodes, it will either try to adapt more than 2 chapters per episode or maybe it will leave out one of the more unrelevant two-chapter cases. First option would only work with those cases that don't fit into a single episode, because splitting those two-chapter cases up would not work very well in my opinion. But I don't want them to rush a major arc and its plotline either, thus I would prefer them to leave out one of the small cases.

If that's the case, maybe they want to put the majority of the case in one episode and the solution of the case at the beginning of the next one? Otherwise I don't know, how they want to fill an entire episode with a chapter that isn't really that long...

They might have to move or cut out smaller cases if they want to end on shibuya, which I want them to. Not all cases matter to the overall plot so if they were moved to a second season out of order, it wouldn’t matter much. Hopefully they do so, because ending on Shibuya would be a great way to end the season.

@Huntee1999 Yes, ending on Shibuya would be the best point. If they end on Yamagami, it wouldn't have the same impact. It's a great arc, but not a climax. The problem is that in this beggining, all the smaller cases introduce important characters (Dr Mofu, the reporter girl, Kawasemi). The only one that doesn't introduce anyone is the Mad Chamaleon. Maybe they will cut it out.