neuhvatljiv

1. elusive; uncatchable
   Lopov je mesecima bio neuhvatljiv za policiju. — For months the thief remained beyond the police's reach.
   Napadač je večeras bio neuhvatljiv za odbranu. — Tonight the striker was impossible for the defence to stop.
2. (of a feeling, idea) elusive; intangible
   U toj muzici ima nečeg neuhvatljivog. — There's something elusive about that music.
   Za mnoge je sreća i dalje neuhvatljiva. — For many people happiness is still elusive.

Who cannot catch someone is usually expressed with za + acc. (neuhvatljiv za policiju).