The skyscraper is past the bank, downtown. You need to be a superhero to go downtown (get your ID from the costume store, and visit the prison).
the skyscraper is in super power.
If you don't have the super flying power, you are wasting your time. When you have the super power, fly to the top window of the skyscraper and go up from there.
All you can get is the flying power, and only on that island. After you defeat the other 5 super villains using your wits, you will receive super flying power, which you need to capture Betty Jetty atop the skyscraper downtown.
On Super Power Island, Betty Jetty is atop of the skyscraper in the Downtown area. The building is cordoned off with yellow warning tape. To chase her, you will need to fly. Defeat the other five super-villains (without the flying power), and you will receive your flying power. (The phone in the phone booth will ring.) Go to the skyscraper and chase her when she flies away.
There are high-rise buildings on Main Street and Balding Avenue on Spy Island. The skyscraper in Downtown on Super Power Island has been sealed off by the police until the super villain Betty Jetty can be captured. (see related questions)
Only flying power. Once you capture the first 5 villains, the pay phone will ring on Main Street. Answer it to receive your super power. Now you can climb the skyscraper and chase Betty Jetty.
Once you have captured the first 5 super villains, the phone will ring on Main Street. Answer it to get your Super Flying Power. You can turn it on and off with the icon at lower left, and it only works on Super Power island, and any ad games there. Use the flying power to chase and capture Betty Jetty at the skyscraper Downtown.
Defeat the other 5 super villains (all but Betty Jetty). When you walk past the telephone booth, it will ring. Answer the phone and you will be given the power to fly. Now you can go after Betty Jetty, on the skyscraper Downtown.
When you have defeated the first 5 super-villains, the pay phone will ring. Answer it and you receive your super flying power. Turn it on and off with the small icon at lower left. Now you can climb the skyscraper (downtown) and chase Betty Jetty.
You have to catch the first 5 super villains before you can fly. When they are in prison, the pay phone will ring on Main Street,and answering it will give you your flying power. Then you can catch Betty Jetty at the skyscraper downtown.
When you have captured the first 5 super villains (all but Betty Jetty), the pay phone on Main Street will ring. Answering gives you your super flying power, which is turned on and off by the icon at lower left. Now you can chase Betty Jetty at the top of the skyscraper.
The island after Super Power Island was Spy Island.