Christopher Guest is heading to TV with "Family Tree," a new HBO comedy. "Bridesmaids" actor Chris O'Dowd will star.

According to Variety, "Family Tree" follows a 30-year-old man who receives a mysterious box from his great aunt and then embarks on a journey to find his family roots. The series will run simultaneously on BBC 2 and consist of eight half-hour episodes.

Look for Guest, who will also direct the series, and his co-creator Jim Piddock to appear in the series as well with additional casting to be announced.

News of Guest working on a TV series first broke in May 2012. No premiere date for "Family Tree" has been announced.

O'Dowd last popped up on US TV in two episodes of "Girls." He'll also appear in the UK TV series "Moone Boy."

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