From the title I want to watch Suspense thriller Korean dramas which make  watch an episode after another 

Examples of dramas I liked a lot 

Kingdom 

Mask 

Return 

Life on Mars 

Mad Dog 

 

 PLEASE SEE MY WATCH LIST SO YOU DO NOT HAVE TO RECOMMEND A DRAMA I WATCHED 

https://mydramalist.com/dramalist/Peach

I haven't seen the dramas you mentioned. 

I can suggest Misty. The intriguing drama and suspense made me chase after each episode.

I recommend:

Healer- one of the best dramas, interesting and addicting plot, suspense,couple with chemistry 

Kill It - thriller, suspense, great acting and chemistry between leads 

Kill Me Heal Me - original plot, addicting and great acting 

The Smile Has Left Your Eyes - suspense, couple with great chemistry, interesting characters

Secret - addicting, melodramatic, best acting

Black and Bad Guys

Signal is practically a perfect thriller,  and cruel city was very engaging as well.

  1. Smile Has Left Your Eyes 
  2. Circle 
  3. He is Psychometric 
  4. Strange Forest 
  5. Arthdal Chronicles
  6. Memories of the Alhambra

I second "Signal" and "Secret Forest". Both are great thriller-dramas.

Guardians

Doctor Stranger

Time Between Dog abd Wolf

Cruel City

I see Mistress isn't on your list, it's underrated and has only 12 episodes, the mystery/thriller kept me on the edge of my seat! 

also Mother suspense/thriller drama (started off slow but worth watching) it's a remake of a Japanese drama but I prefer the Korean version myself because this one had more thriller (the main kid's mom's bf chasing after them while they're on the run)