Stealth Walker

In both dramas, the female lead receives very quick training before starting her job as an undercover agent in the drug world. She forms a strong friendship with another woman during her mission.

In both dramas, the main character goes undercover in the drug world after someone they loved is killed.

The main character is really good at improvising and at getting themselves out of tricky situations.

Both dramas feature a subplot with a scientist making drugs for the drug lord.

In both dramas, the female lead is rash and fearless. She has a goal and she's willing to push herself to the limit to achieve that goal.

Both dramas feature actor Li Zi Feng in a role somewhat similar: he's more kind and pensive while the female lead is the wildcard.

In both dramas, the female lead pretends to be someone she's not and manipulates people.

Some similarities:
- chinese crime drama focusing on police, undercover work and drug trafficking
- past tragic events of main leads have something to do with drugs and crime
- action, investigations and sometimes slice of life moments
- you get to know the main antagonists and get insight into their criminal activities

Some differences:
- The First Shot focuses on the Special Investigation Team, especially the two MLs. There are several small undercover jobs, but also a lot of other police work
- Stealth Walker focuses on the FL and she is undercover for almost the entire drama
- The First Shot mainly shows friendships between the Special Investigation Team
- Stealth Walker has a slight romance plot between FL and ML

Both dramas share the same core conflict: the police's war against drug gangs. In each work, we find police officers working under massive psychological and professional pressure. The heroine in The Devil Between Us faces her childhood friends who got involved with drugs, while in Stealth Walker, the policewoman works undercover inside a dangerous gang. Both dramas focus on "psychological infiltration": how a person can live a double life between duty and personal feelings. Personal relationships are complicated in both cases, and the price is high. The atmosphere is similar in their realistic portrayal of investigations and dangers, and the message is clear: drugs are everyone's enemy, and the police pay a heavy price for their sacrifice.