No word if Katie will be in this one but we do no she will 100% be in 7×04
CURTIS GOES UNDERCOVER FOR ARGUS — Still in prison, Oliver (Stephen Amell) faces his biggest challenge yet. Meanwhile, Felicity (Emily Bett Rickards) gets an intriguing offer, and Diggle (David Ramsey) asks Curtis (Echo Kellum) to go undercover for ARGUS.