That Special Someone is a main story mission in Grand Theft Auto IV, performed by protagonist Niko Bellic.
It's the 84° GTA IV mission in chronological order, and it takes place in Broker / Dukes.
Niko gets to choose the fate of Darko, his betrayer and the person he's been searching for since the war.
If Niko chooses to kill Darko, he will claim he feels "empty" for it. However, if Darko is spared, Niko will feel better, knowing that nothing would have changed even if Darko Brevic was dead.
- Niko will shoot Darko 12 times, referencing the 12 friends who died in the war after Darko's betrayal.
That Special Someone: Mission Objectives
- Pick up Roman.
- Head to the rendezvous.
- Choose to kill Darko or let him live.
- Take Roman to Brucie's place.
That Special Someone: Mission Info
- Mission Number 84
- Mission Giver
Niko Bellic - Location Francis International Airport, Dukes, Liberty City
- State / Area Broker / Dukes
- Available After Mission (Story Mode)
- Rewards "That Special Someone" Achievement
- Unlocked Items
One Last Thing - Featuring
Darko Brevic 
Roman Bellic 
International Affairs Agency (IAA) 
United Liberty Paper