A short but gorgeous series (mostly penciled by the unstoppable J. H. Williams III), Chase was one of DC’s late 90′s gems, and is well worth investigating.
Batman 550 (get the J. H. Williams III variant cover!)
Guide to the DC Universe Secret Files & Origins — “Standard Operating Procedure” (art by JHW3)
DCU Heroes SF&O — “Spies Like Us”
DCU Villains SF&O — “The Evil That We Do”
Superman: Our Worlds at War SF&O — “Resources”
JSA SF&O 2 — “Rumors and Facts”
The Flash SF&O 3 — “Moments Too Late”
Joker: Last Laugh SF&O — “Touched” (art by JHW3)
Green Lantern SF&O 3 — “Single Point of Failure”
Batgirl SF&O — “New Threat File”
Hawkman SF&O — “Worth More Than Gold”
Green Arrow SF&O — “Bag of Tricks”
JLA/JSA SF&O — “Telephone”
All of the Secret Files stories were created by Dan Curtis Johnson and J. H. Williams III, and showed what Chase and the DEO were up to after the conclusion of the main series. They are listed in the correct chronological/publication order.