ER - R5 - Relentless

After Leslie's attack at Whirl, Ariel equips herself with a dark type dog, Jackson. But will he be enough to protect her when the ghost seems relentless in his pursuit?

Ariel Thompson: [link]
The Ghost of Lt. Leslie: Seen in The Helpless (R2) , The Pyre Part 1 and Part 2 (Post R2), The Restless (R3) and The Ruthless (r4)