Black Out

An innocent guy is considered guilty of a horrible crime, Is he going to make people believe him? if u can’t wait the new episodes, watch this one

Falsely accused, hidden long term murder mystery, ml trying to find the truth, police brutality, unlikely paring bonding together to find the truth
And maybe more

If You're looking for a psychological mystery thriller with the same suspense and good-story-building like Mouse, & if You're someone who wants to watch characters You'll feel empathy for,even if It's just a thriller...You should consider watching 'black out'...It's an absolute good story with an outstanding cast...

While singal has more elemnts of sci-fi (like a walkie-talkie that connect two timelines), both dramas masterfully deal with police investigations, and political corruptions that try hiding the truth.

Did he do it? Didn't he do it? Is it a good guy or a bad guy? The masterful acting of the leads are incredible. The masterful story telling keeps you on the edge of your seat right up the very end.

Both leads end up being accused of murdering people who are close to them and both leads have no memory of committing said murder. Both end up having to navigate their way around prison and both work together with people who believe in their innocence to prove they are not the culprit.

Both dramas are inspired by European original stories (one an original drama, the other a novel). They also share a support actress and the director. Sadly, it looks like the technical team isn't the same in Mantis as in Black Out, because it definitely shows. So far (ep 1), Black Out is the better drama. But if you want an European-feeling in your police kdrama, this could also be it.

A public official's child/children got involved in a crime and they did everything to hide the truth.

A public official discovered that their child/children was involved in a crime. Out of their love for them and against the oath they took, they decided to hide the truth.

Both shows are about hidden truths and trust that is ought to be broken.
You should definitely check one or the other out

Both are murder mysteries in which the ML is suspected of being a killer and viewed as dangerous by those around him. In both, he's lost part of his memories and is uncertain of past events. Both dramas have a similar feel with dark vibes and all the characters having secrets.

Same writer. Even though Black Out is based on a book, you can see similarities in the writing styles through the adaptation. Black Out also has a similar setting for the main character where he is seen as an outcast and is despised by the rest of his village community. Lots of injustice like Save Me 2 to the point it will infuriate you even more with how despicable most of these characters are in their actions.

A TV series centered around the unfolding relationship between free and unpredictable yet dangerous Kim Moo Young, who is called a "monster". He is the first assistant in a Korean beer brewery who becomes a suspect when a woman's suicide turns out to be murder. His life begins to change when he meets a kind, warm advertising designer named Yoo Jin Kang, who wishes to be Moo Young's safe haven. She bears as many emotional scars as him. Yoo Jin Kang also has a brother, a homicide detective named Yoo Jin Gook, with 27 years of job experience. He strives to "reveal" who Moo Young really is and attempts to keep his sister, Jin Kang, away from Moo Young, with whom she begins to know.

Genius profiler Lee Hyun, returns home to Korea after something from a case he’s been sent triggers a memory he thought he’d lost forever. Unbeknownst to him, one of his team members, Detective Cha Ji An, has been investigating him for some time. She is aware that his father was murdered and his brother disappeared under mysterious circumstances involving a criminal named Lee Joon Young -- whom they both want found and incarcerated. Each seeks to unravel the other, unaware that they’ve been drawn into a dangerous game of cat and mouse by a master player and that both truth and evil are closer and far more twisted than they think.

Noh Ji Wook is a brainiac prosecutor and Eun Bong Hee is a rookie justice department intern, who always seems to find herself in the most unfortunate and embarrassing situations. Bong Hee is falsely accused of murdering her ex-boyfriend, and Ji Wook gets demoted because he risks his career and reputation to save Bong Hee.