[quote=@Polyphemus]
[@Lord Wraith] So I've been reading the character sheets and I'm just idly curious about one thing: if Batman is the "world's greatest detective" and Nightwing is third, who has the #2 slot? Elongated Man? 
[/quote]

Detective Chimp, according to the injustice comics.

[img]https://upload.wikimedia.org/wikipedia/en/thumb/b/b3/Detectivechimp.jpg/220px-Detectivechimp.jpg[/img]