Halo 4 Spartan Ops: Episode 3 trailer goes live

"You came here to study a planet..."

The latest Halo 4 Spartan Ops trailer marks the triumphant return of Dr Halsey, creator of the Spartan Programme. She's a crazy old lady who got famous by abducting children and stuffing them full of genetically engineered machismo. Basically, she's Master Chief's mum.

The trailer sets an exciting stage, but I can't help but wonder whether the pack itself will reprise episode 2's trick of leaving a massive gap between the CGI storyline and what happens in the actual, you know, game. Come on, 343. Let us back aboard the Infinity. My Spartan-IV craves a tete-a-tete with Halsey.