In the following clip from Arrow Season 2 Episode 19, Oliver and company are attacked by Deathstroke.

Not the most shocking development, right? But now consider where this enemy attacks his foes: INSIDE THE LAIR.

Watch the sneak peek to see Deathstroke welcome everyone home in the most unpleasant of ways:

Elsewhere on tonight's new installment, one member of the team is sent to the hospital, while Thea hits a breaking point and Laurel struggles with what she now knows about Oliver.

Watch Arrow online via TV Fanatic if you need to catch up and flip through photos from "The Man Under the Hood" now:

Arrow Photos from "The Man Under the Hood"

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