The opening twopart story sees the return of the silver age tradition of a teamup with hal jordan though barry is a bit distracted by the events of “the button” and doesn’t notice the return of the return of no really the reverse flash and his kidnapping of iris west which leads into the second story set mostly in the 25th century where we finally get thawne’s rebirth sorted out along with his and barry’s backand forthstory

This is another excellent volume that tries to sort out or at least smooth over the tangled timelines

22 are to be found in “the button” crossover with the batman’s own title