Arrow 1x21 'The Undertaking' - Felicity finds a transaction on a crooked accountant's computer that could help Oliver locate Walter. Meanwhile, Malcolm reveals to Robert Queen and Frank Chen painful details about his wife's murder and how those things shaped his plans for the Glades. Original Air Date: May 1, 2013 on the CW.
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Arrow 1x21 Extended Promo 'The Undertaking' Arrow S01E21 Extended Promo Arrow Season 1 Episode 21 Extended Promo Preview
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