Hunter x Hunter (3-in-1 Edition), Vol. 4

Gon's search for his father continues! After he's forced to pawn a precious possession to raise some cash, he stumbles across a silent auction bazaar and dives into the seedy world of rare-item appraisal. But trouble brews when two Spiders are spotted lurking in Yorknew City. Gon and Killua track them using Zetsu, but they stumble right into the Spiders' web—and get captured!

Hunter x Hunter (3-in-1 Edition), Volume 4 — collecting manga Volumes 10-12 — by Yoshihiro Togashi.