When Leim was young he witnessed his family cat give birth to a litter of kittens, one of which was a runt who passed away several days after birth. This experience piqued his curiosity in the cycle of life and death. Throughout his adolescent years he felt drawn to the worship of Pharasma as he found more examples of the beauty and sorrow present in the cycle.
Five years ago, while visiting his grandmother's grave, Leim was attacked by a ghoul and nearly killed. He was saved by the groundskeeper of the cemetery who chased the ghoul off and rushed Leim to the church of Pharasma for healing.
During his recovery, professor Lorrimor visited Leim to learn more about the attack. It was during these conversations that Leim convinced himself that he must hunt the undead monster and put it to rest.
Several months passed before Leim was healthy and courageous enough to begin hunting the ghoul who had nearly ended his life. He spent many evenings hiding near the graveyard, peering through the fog, fantasizing about enacting his revenge. Several times he saw not one but several ghouls return to the graveyard to dig up recently buried corpses. He was too frightened to intervene and the scene haunted his dreams for many nights.
Leim sought professor Lorrimor and confided in him, telling him the details of what he had witnessed in the graveyard. The professor helped him come to terms with his fear and helped him better understand the nature of the ghouls. This information bolstered his confidence and on his next graveyard stakeout, Leim rushed the ghouls and brought one down while the others fled. He returned to the professor to tell him of what happened and their relationship strengthened.
He continued to study with the clergy of Pharasma and was allowed to accompany higher ranked clerics as they went on patrol around the borders of Gallowspire with knights from Lastwall. These patrols provided the subject of many discussions with professor Lorrimor whit whom Leim began to establish a respectable professional bond.