MUMBAI: There were some big questions left hanging following the finale of season three of Stranger Things.The Netflix sci-fi horror will be back for season four, which means all of those loose ends you've been losing sleep over will be ironed out.

Netflix tweeted the first teaser trailer on Friday, February 14, the perfect Valentine's gift for Stranger Things fans.

'From Russia with love...', reads the caption. In a nutshell, at the end of the last season, a Russian voice in a Soviet prison facility with its own demogorgon referred to 'The American', suggesting that Hopper hadn't been blown to smithereens after all.

Have a look.