Athena: Goddess of War (2010)

Special agents trying to fight against villains. Action, drama, lost family members...

Athena is a spin-off of Iris and the shows are set in the same universe

Both drama has a kick ass female detective
Both has romance
Both are intense, explosion, investigation, crime
Both leads are good looking couple

Both has Greek mythology on the title. Both has lots of action. Both strong male snd female lead. Lots of shooting and killing.

Athena is a spin off from Iris. They are very similar with a different cast and a slightly different story. The action, suspense and romance are as amazing as in Iris.

Both dramas are action dramas about the police. The difference between the two is that in Athena: Goddess of War, it's talking about secret agents while Poseidon is about the police.