Star Trek The Next Generation - Lt. Barclay's Spider Transformation

Star Trek The Next Generation - Lt.

Barclay's Spider Transformation - After departing the Enterprise to recover a misfired photon torpedo, Picard and Data return to find the ship in disarray as the crew de-evolves into primal forms. Amid the unfolding chaos, they encounter Lt.

Barclay, startlingly transformed into a spider-humanoid.

From the full episode, "Genesis."