Sherlock's Lara Pulver has teased that the famous detective has an "infatuation" with her character Irene Adler.

Pulver signed up to play Irene in August and will appear in one of the new episodes.

Pulver told Digital Spy at the Crime Thriller Awards that there will be a spark between Sherlock (Benedict Cumberbatch) and Irene.

"[Executive producer] Steven Moffat's written an episode about Sherlock dealing with what love is, rather than Sherlock really knowing what being in love is," she hinted. "We're both very much playing a mind game with each other. We've met our matches with each other."

Asked if there could be romance between the pair, Pulver teased: "It's kind of deeper than romance. It's kind of infatuation."

Sherlock is due to return in early 2012.

> Read more Sherlock coverage

Watch our video interview with Lara Pulver at the Crime Thriller Awards below:

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