To Catch a Slider

S5 E15: The Sliders are relieved to find themselves in a normal world, but Rembrandt (Cleavant Derricks) notices that the timer is malfunctioning. It keeps counting down, then up, then down again. Suddenly, the vortex opens and they are thrust inside. When they are thrown back into an alley, Diana (Tembi Locke) sees that the timer appears to be working normally again, but is worried that it could malfunction again at any moment. Rembrandt admits that it is not the original timer invented by Quinn...