was recruited as director of "The Man Trap"; among his varied directing credits were episodes of I Love Lucy for Desilu Productions. Pre-production began during the six scheduled filming days for "The Enemy Within", but that episode ran long. Filming for "The Man Trap" commenced around 3:20 p.m. on June 22 and continued until 7:10 p.m. Several futuristic-looking salt shakers were sourced for scenes in "The Man Trap", but due to concerns that they would not be recognized, they were instead used from "The Man Trap" onward as McCoy's tools in sickbay. The first full day of filming on June 23 was predominantly shot on the set representing the bridge of the Enterprise. Two small establishing shots were postponed until the filming of the next episode. The following day, corridor scenes were filmed, as was the climactic scene featuring the creature's death. At that point, Daniels estimated that he was only a third of a day behind schedule. After a break for the weekend, production resumed on June 27 for scenes in the botany lab, the briefing room and sickbay. One of Grace Lee Whitney's favorite sets to work on throughout the series was the lab, which was the sickbay redecorated, as she enjoyed working with George Takei. The animated plant in that scene was a hand puppet controlled from under the table, and Whitney later recalled that the operator could see right up her skirt throughout the shoot and would occasionally try to grope her using the puppet. For the sickbay scenes when Spock bleeds, Daniels decided that Vulcans should have green blood. Roddenberry disliked the idea and unsuccessfully attempted to have it corrected in post-production. By the end of the fifth day of shooting, Daniels estimated that he was now only half an hour behind schedule. Days six and seven were spent on the sets used to show the surface of M-113; while the design of the planet did not match Johnson's vision, he was pleased with it nonetheless. The ruins were constructed out of cardboard boxes covered in gunite (a spray-on, cement-like product) to give them a rocky appearance. Production wrapped on June 30, at 2:55 p.m. Bob Justman later referred to Daniels as the "savior" of the series for delivering "The Man Trap" on schedule, and when the director for "The Naked Time" dropped out, Daniels took over and shot the episode back to back with