in a mansion with yellow zappy lights on the window. they cover the entire window. the agent is at the top of the mansion behind the bars of the window. he is ties up on the floor. release him and you will receive a bow tie, it will help you a long way! also your second clue to your transparencies.
at a place in spy island that i do not know of.
But It!
there isn't a fourth agent.
click on him
they are used for keeping the agent held prisonerThe dogs on spy island are in the dock Hideout
Click on him
help the kiddnapped agent
Kidnapper
go outside and play
you do not you keep the glass
Once you open the locked vault and rescue the agent, go back to the right and there will be an agent there.
you find it at toupee terrace. :-)