Both BL dramas follow a group of friends that has one (or more) of them trying to kill the rest while all of the group's dirty secrets are revealed as they try to find who is the serial killer.
JoongDunk the actors star in both BL dramas which have crime and killers in both. There is deception and uncovering of secrets as the drama progresses. Joong is the serious character and Dunk is the playful character in The Heart Killers and their roles are reversed in Dare You to Death.
Both are Thai BL dramas about police detectives that try to solve murder mystery cases. However, The Sign has some supernatural elements which Dare You to Death does not.
When Puifai dies after a night of partying with friends, new police inspector Khamin and Captain Jade, adversaries, join forces to find out the truth behind her passing. The case, however, proves not to be as simple as it first appears.
