Martin Hristov is a fictional character and one of the main protagonists on the BNT crime series Pod Prikritie.

When turned 18, Martin was recruited by chief inspector Emil Popov to work for MDFOC (Main Direction for Fighting Organized Crime) as an undercover policeman with code name "Shimmer".

In Episode 1.1, Martin saved Silvia Veleva from being beaten on the street by Tudzharov's men.

In season two, it is revealed that the man who pointed a gun on Martin is Popov's former colleague Alexander Mironov.

In Episode 3.3, when Dzharo was released from prison after the attempted murder on him, he reunited his crew, in which now are Martin and The Twins.

In Episode 3.6, Martin saved Popov's daughter Zornica from being killed by Ivo's men.

In season four, Martin starts to work as a regular inspector in Popov's group.

When Ivo's men got out of casino they robbed, Martin shot on them, but they managed to escape.

In season finale, after Popov shot Dzharo, Martin saw what happened and staged the scene.

In prison, Popov told Martin he has a man in organization owned by Faruk Aykan, Turkish mobster, - Erol Metin, an undercover cop.

In season 5 premiere, Martin took over Erol Metin from Popov and the two met in vacant building.

In Episode 5.7, Martin and his men went in Ivo's factory to apprehend him for drug business, but, one of his men, inspector Kirov was killed during the action and Martin was temporarily removed from chief position and replaced by inspector Zarev in Episode 5.8.

In the same episode, Martin managed to convince inspector Todorov to work rogue with him on bringing Ivo down.

Later, Martin called Erol on cellphone and told him he sent Ivo a flash with real information about him.