Tying Up Loose Ends

Chapter 4 - A Wolf Among Sheep En route to recover the Typhoon, Jensen discovered a Purity First terrorist trying to steal it. But the so-called extremist was secretly augmented and killed himself to avoid interrogation. Hoping to find answers, Jensen confronted Zeke Sanders, the Purity First leader, who swore up and down he didn't know his man was enhanced. Jensen let Sanders escape, determined to focus on the Aug...

M4 - Tying Up Loose Ends is a main mission in Deus Ex: Human Revolution.

Give the Typhoon to Pritchard
After returning from Milwaukee Junction to Sarif HQ, give the Typhoon to Pritchard in the Tech Lab on the second floor.

Meet with Sarif in the Penthouse
Next, see Sarif in his Penthouse office by taking the elevator, where he will brief you on your next mission. Head to the elevator and head back down.

While in the elevator, the side quest Paging Adam Jensen will activate, asking you to visit your office. Also, make sure to access your workstation computer and to read your messages; the side quest One Good Turn Deserves Another will activate.