(n) (1) ringleader; main culprit; (2) main cause; source; (P)[edict]
を
(prt) (arch) (See を) marks object of action, etc. (also adds emphasis)[edict]
探す
さがす
(v5s,vt) (1) (esp. 捜す) to search (for something lost); to seek (a suspect in a crime); (2) (esp. 探す) to search (for something desired, needed); to look for; (P)[edict]