"Star Trek" suffered from declining ratings throughout its three-year run; from the premiere to the final episode, "Star Trek's" ratings had dropped more than fifty percent. Before production began on the third season of "Star Trek," Roddenberry had offered to demote himself to the position of line producer and personally supervise production of the show. In return, he wanted NBC to move the series to Monday nights at 7:30 PM. But at the last minute, mainly because George Schlatter would not allow "Rowan & Martin's "Laugh-In"" to be rescheduled from its then-current 8:00 PM time slot to 8:30 PM, NBC decided to move the show back to Friday nights at 10:00 PM, then considered a "suicide slot" for television programming, and Roddenberry, almost completely burned out from his struggles with both the network and the studio, effectively completely resigned from the series.