The much-awaited trailer of Ajay Devgn`s `Drishyam` was unveiled on Thursday.

The three-minute trailer features Devgn, as a common man, trying to save his family which gets embroiled in a murder mystery.

The thriller-drama, directed by Nishikant Kamat, is a remake of a 2013 Mohanlal-starrer Malayalam film of the same name.

`Drishyam` also stars Tabu, as a cop, (read more) and actress Shriya Saran in lead roles.

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The film, which has its music by Vishal Bharadwaj, is expected to release on July 31.