Claude enters the construction site's elevator and, after reaching the top floor, finds Miguel and Asuka Kasen dead and Maria Latore taken hostage. Claude takes a ransom letter from Catalina from a pole, which Miguel is impaled on, and reads it, walking back to the elevator quickly.
The reward for "completing" this mission is $45,000 (the money is for completing the previous mission, S.A.M.) and the unlocking of the game's final storyline mission, The Exchange. However, Claude will need to have $500,000 on hand in order to start the mission, as stated in Catalina's letter.