Timeline Changes but only 1 year back
Thriller/Mystery
Serial Killer on the loose
it will give you the vibes of what will happen next

Timeline Changes but only 1 month
Thriller/Mystery - check
it will give you the vibes of what will happen next if the timeline changes

Timeline Changes - check
Thriller/Mystery - check
it will give you the vibes of what will happen next if the timeline changes

Ghosts/Spirits
ML is a Police Officer in this drama who can see ghosts
Deaths
it's a watchable drama

the plot sounds a little similar at some point
Ghosts/Spirits
Two leads in this dramas
Different ways but same purpose
Deaths back to back to cover the truth
Both have Police but in Black the Grim Reaper played the Police role as well
But still it's a watchable Drama

the plot sounds a little similar at some point
Ghosts/Spirits
Three or more Main leads
Different ways but same purpose
Deaths
Similar Exceution (Only difference is in Grid Police / Priest (Doctor,Priest,Police) were there for their exorcisms)
But still it's a watchable Drama

- Gives the same vibes but the themes are different (TD - Revenge , SD - delivering the cargos )
- Action/Crime/Mystery/Thriller

- Similar drama contains different profilers
- Serial killer on the loose
- Action/thriller/Mystery/Suspense

- Similar drama based on a profiler but with his team members, who identifies killers with their instincts & team work.
- Suspense/Action/Thriller/Mystery
- Plot twisting truth which gives me similar vibes

- gives similar vibes as both dramas related to Tax Service
- corruption/powerful seniors try to stop their colleagues for doing their work
- group/team of people who won't stop no matter happens/consequences but they will do it against those people who has done tax default

same feeling while watching signal it gives similar vibes cop came to the past himself & rather than just talking through a walkie talkie the TV or any other things talk to him about telling him the situation (as he had an accident which hit his head & went into coma so the delusion of going from 2017 into 1988 year appears in front of him)
almost similar dramas
Serial killers back & forth in the time parallel period

- Both have a tragic past
- Both ML family died in an accident & have a disability/specialty given to the brain after it
- Both ML works in medical/psychological field related to brain
- Thriller/Mystery/Suspense
- Brain experiments are done in it