Nobody needed to worry about Diggle stopping the action.
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Roy and Diggle are holding their own on Corto Maltese.
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Oliver is crouching on Corto Maltese where he's looking for Thea.
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Roy must be thinking of Thea, before he goes to Corto Maltese with Oliver.
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J.R. Ramirez joins the cast as Ted Grant, AKA Wildcat, and receives a visit from Laurel Lance.
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Laurel looks pretty beat up. Is she wearing her sister's jacket?
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Seriously. Are these photos of Diggle and his daughter not the most adorable??
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Lyla, Diggle and their baby. They appear to be very happy with their new family.
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Arrow Quotes

You know Oliver, somebody once told me that secrets have weight. The more you keep, the harder it is to keep moving.

Diggle

Ra's al Ghul: You tasted death and you wanted more, but the truth is everyone and everything must come to an end. Even for one such as me.
Oliver: Kill me, but spare John Diggle's life. Let him go. I will beg for it.
Ra's al Ghul: You have shown tremendous strength, fortitude, power. No, Mr. Queen. I don't want to kill you. I want you to take my place. I want you to become the next Ra's al Ghul.