 In mid-1816 Shelley and Mary made a second trip to Switzerland.They were prompted to do this by Mary's stepsister Claire Clairmont, who, in competition with her sister, had initiated a liaison with Lord Byron the previous April just before his self-exile on the continent.Byron's interest in her had waned, and Claire used the opportunity of introducing him to Mary and Shelley to act as bait to lure him to Geneva.