The Black Monday Murders, Issue #4 can be a little confusing. There are three children in it, the twins, Grigoria and Daniel Rothschild, from their birth in 1962 to 1981, and there is the diary of Wynn Ackerman from age five in 1976 to 1981. We of course see them as adults in the 2016 timeline and as young adults in the 1985 and 1989 pages, culminating in Daniel's expulsion from the group and finally Daniel's murder in 2016.
I did love Issue #3, and it's still my favorite issue of the four, but Issue #4 ties everything together from the bank side of things. There is still the murder investigation and Detective Theodore Dumas, who is my favorite character of the series. You only see him briefly in this issue. I generally don't re-read comics. I decided early on that I'd spend enough money on comics so that I wouldn't have to. I pulled out Issue #4 today along with Secret Wars, also by Jonathan Hickman, but I have a solid hankering to go back and re-read Issue #1 through Issue #3 of The Black Monday Murders.