JUMP!
Go to the electrified building on Toupee Terrace and rescue the second spy.
To rescue the second spy, avoid the electrified windows. To rescue the third spy, you will need to go up one building to the rooftops, then to the far left and back again. This requires the Grappling Bowtie from the second spy. (see the related question)
It is the last building on Toupee Terrace. Its windows shock you if you try to climb them. But you can do it if you move carefully from window to window as the power goes on and off. You will need the Laser Pen from the first spy (at the docks) to free the second spy from the attic of this building. (see related questions)
Take the Laser pen and go to the electrified building on Toupee Terrace. Climb the windows by jumping when they turn off. Use the laser pen to cut the attic bars and save the 2nd spy.
You cannot enter the building. The second kidnapped spy is in the attic, and you can climb to the roof by jumping from window to window when the power goes off for each one. You will need the Laser Pen from the first kidnapped spy (at the Docks) to cut the bars.
The only way in is through the attic, using the Laser Pen you can obtain by saving the first agent, at the docks. You will have to climb up the electrified building when the windows turn on and off.
After you climb to the roof of the electrified building on Toupee Terrace, the laser pen will cut through the attic bars. Then you can rescue the second spy. To use the Laser Pen, aim at the bars and move your computer mouse to the right.
After you climb to the roof of the electrified building on Toupee Terrace, the laser pen will cut through the attic bars. Then you can rescue the second spy. To use the Laser Pen, aim at the bars and move your computer mouse to the right.
To rescue the second spy (in the electrified building), you will need the Laser pen from the first rescued spy (at the Docks). Climb onto a window when the power goes off, then jump to another window when it turns off, before the one you are on gets its power back. Make you way to the roof and cut the bars with the Laser Pen.
The second rescued spy (in the electrified building on Toupee Terrace) gives you the grappling bowtie, which you use to rescue the third and final missing spy.
The spy at the electrified building is the second spy you have to rescue, as they have to be saved in order. The first spy to be rescued is at the Docks, and when you save him, you receive the Laser Pen, which can cut through the attic window bars and reach the second spy.
The second spy is in the attic of the electrified building on Toupee Terrace. Climb up to the roof and free him using the Laser Pen from the first rescued spy. Reaching the second spy is not complicated, but requires timing. Go to the building on Toupee Terrace that has electrified doors and windows. Jump up to each window while the power is off, then quickly to the next window when it goes off. When you reach the roof, use the Laser Pen to cut open the bars. Go inside and untie the second spy. He will give you the Grapple Bowtie.