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The Caped Crusader reaches the 5,000-volt mini-charge in his ever-reliable utility belt and, using the web as a conductor, electrocutes the spiders. The Dynamic Duo then proceed to The Black Widow's vault, where they find her and Tarantula, Daddy Longlegs and Trap Door counting the money from her latest robbery. Spotting them, B.W. reverses the polarity of her brain device and short circuits his Batbrain! Robin, fortunately, has lost one of his electrodes and is not subsceptible to the device's effects--but is quickly tied up anyway. The Caped Crusader, now under Black Widow's spell, uses his Remote-Controlled Batcomputer Oscillator to locate a bank The Spidery Fiend can rob. The computer responds with an answer but also warns that Batman's life will be in danger if he accompanies her to the bank!

Black Widow, unwilling to lose Batman, employs the help of a mind-control device, a rack of disguises and the male rubber dummy from the front porch, Black Widow attempts a heist of The Heritage Bank — in the guise of The Dynamic Duo! They succeed, and the guard is forced to shoot at them as they make a break for it. Meanwhile, Robin, of course, manages to release himself and uses Black Widow's mind-control device to break the spell of his partner and they extricate themselves from the sticky trap. They discover the spidery gang in another room of the hideout, counting their ill-gotten loot. Black Widow might return at any minute, so Batman re-ties Robin and goes back to playing solitaire. Once B.W. has returned with her ill-gotten gains, The Duo pounce on Tarantula, Daddy Longlegs and Trap Door! Batman then turns Black Widow's own mind-control device back on its creator, rendering her helpless. Later, in Gotham State Pen, The Dynamic Duo use The Brain-Wave Batanalyzers to de-criminalize Black Widow and her minions. Add a recap »