As Different as Night is from Day (Romance/Horror/Sad/Action)

Summary
Echocry does her best as deputy and hopefully leader of RiverClan, but when a mysterious enemy comes and takes one cat every day, she must try to help and hopefully save the clan with courage, and faith. And certainly no fear. But what happens when the very same murderer, is the one you love?

Rating
The following story is rated Worse for the extreme violence, detail for said violence, some suicidal thoughts (Not too bad, though. Just like, "If I had never had lived none of this would happen!" or "I wish StarClan would just take me already!" No suicidal actions.) and some rude words said.

Prolouge
"Echostar! Echostar!" Her clanmate's yowls rang above the sound of the rushing river below. She smiled happily, feeling pride surge beneath her pelt.