Ultimate Spy Kit: Become an Electronic Super-Spy [With Alarm, Listening Device, Pressure PadWith Invisible-Ink Spy Pen]

The Ultimate Spy Kit: Become an Electronic Super-Spy by David Eckold contains everything kids need to make simple spy gadgets. A plastic tray inside the sturdy box holds wires, headphones, a circuit box, copper tape and more; 13 ""spy cards"" give instructions for assembling a movement detector, an intruder alarm and other gadgets. The kit also contains a ready-made listening device, an invisible ink pen, and a 10-page ""Spy Training Manual"" with tips on shadowing the enemy, using codes and ciphers plus the enclosed spy accoutrements.