You are a one-of-a-kind female detective, you get some case files from the chief detective

The case of a bloody murder in one of the luxurious but uninhabited houses

with a female victim, there is a bite mark on her neck

You and your male companion are moving towards that luxurious mansion with well-equipped weapons

Male colleague knocks on the door and lets himself in before you

But male colleagues suddenly fell dead on the spot, The stab mark on his neck