The synopsis and preview clip for the next episode, 'Sins of the Father,' of season 4 of Arrow have been unveiled.

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This episode is going to bring Nyssa al-Ghul (Katrina Law) back into the frame as she plot revenge against Malcolm Merlyn (John Barrowman), the most intriguing part is that she will try and bring Oliver (Stephen Amell) into her fold and he might have to oblige.

Here's the official synopsis:

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"Oliver (Stephen Amell) receives an offer from Nyssa (gues star Katrina Law) that is hard to refuse. Meanwhile Thea (Willa Holland) continues to battle the blood lust, Malcolm (John Barrowman) steps in to help his daughter, and Laurel (Katie Cassidy) has a heart to heart talk with Nyssa."

In the preview clip, Thea is seen unconscious in hospital as her father Malcolm and Oliver talk. "What's unfolding her is bigger than my daughter," Malcolm says. "We're all backed into a corner, Malcolm," Oliver responds.

Nyssa is seen coming back in full force declaring war on Star City. "The streets of your home will run red with the blood of our enemies," she is seen saying, most probably talking to Oliver.

The ending of the clip is most thrilling, as Oliver and Malcolm go up against each other in battle. The duel looks deadly as it seems like one of them must die at the end of it to declare a winner.

The episode will air on February 10 at 8 pm on The CW.

Watch the clip:

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Arrow, The cw, Television