Kelli O'Hara to Guest Star on Season 2 Premiere of Blue Bloods

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We have more intel on the season two premiere of Blue Bloods.

The episode will be titled "Mercy" and it will feature guest star Kelli O'Hara in a key role.

Kelli O'Hara Pic

The three-time Tony Award nominee will portray Lisa, a close friend of Erin's whose marriage is not what it initially appears.

On the small screen, O'Hara has appeared in All My Children and Numb3rs.

[Photo: Tuukka Jantti/Pacific Coast News]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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