Motel owner Meg Mortimer (Noele Gordon) was about to announce the engagement of her business partner David Hunter to novelist Barbara Brady at a party to celebrate the occasion. Rosemary, in the past known for her neurotic tendencies, had begun to behave strangely.
American psychiatrist, Lloyd Munroe (Alan Gifford), an old friend of Meg's, told Rosemary off, pointing out to her that she'd been: "...threatening me - and David and Barbara - with threats of suicide."
Lloyd was doing his best to help, but was trying to convince Rosemary that she didn't love David, she actually hated him, really the right thing to do?
Particularly as it seemed that Rosemary may have stolen a gun, and Lloyd was fully aware of that fact?
Everybody, including Rosemary's daughter-in-law Diane Hunter (Sue Hanson), was in a state of high tension and the night of David and Barbara's engagement party saw an anxious discussion in the reception area at the motel.
Something horrible was about to happen.
"David... say it... tell me you love me... SAY IT!" she whined menacingly. When he refused, she shot him.
Of course, all was well. David was discovered by Meg and made a full recovery, Rosemary underwent psychiatric treatment and was never seen again, and that was that.
According to legend, the reason for David's somewhat informal attire at his engagement party had its roots in a behind-the-scenes mishap. When Janet Hargreaves first pulled the trigger of the gun, it didn't go off. But Ronald Allen had already broken the bag of stage blood, ruining the suit he was wearing.
It seems that the Crossroads wardrobe allowance could not run to another suit!