Hypothetical situation:
I'm a racist and a black person has been killed, I'm caught fleeing the scene with blood on my hands, I can't be convicted because the fact I'm a racist fleeing the scene with blood on my hands is 'circumstantial evidence'. I wasn't fleeing the scene, I was going back to Ireland to visit me mum, after a lengthy 'enhanced interrogation' it transpires I wasn't going back to Ireland to visit me mum, I was going back for the funeral of my best mate, also a racist, who being a daft bugger managed to blow himself up whilst in the process of trying to kill another black man.
The police catch me fleeing the scene with blood on my hands and apprehend me, they say 'you did it filllyboy'. 'no I didn't', so they give me a good slap. 'OK, I did do it'. I'm nicked.
Years later, after numerous appeals, my conviction is overturned because I only admitted to doing it because the police gave me a slap, not only that, the method used to determine that the blood on my hands was that of the black man who had been killed wasn't fool proof, it could have been someone elses blood, maybe even the blood of a white bloke.
The evidence is unreliable, the fact I was caught fleeing the scene fleeing the scene and my best mates routinely execute black people is simply 'circumstantial'.
Exactly, all circumstantial.
Nobody saw you committing the act, there's no cctv, your first response was "I didn't do it".
As for the blood, tests nowadays are pretty accurate, so if that wasn't the killed person's blood, they would know.
Also, the days of cops beating suspects to get a confession are well over.
There are so many procedures that need to be followed to avoid such things and any confession taken outside these strict rules will be null and disregarded by courts.
In your case, you would be caught, cautioned and formally arrested on suspicion of murder at a police station.
Anything you would say after caution would/could be used against you, but in murder cases you won't be left alone with one officer.
There would be at least half a dozen at any time, so unless they're all bent, they won't beat you or make up a confession.
You would be offered legal representation and why would you refuse???
What some of us disagree with is the costly court case to basically get away with a very lenient sentence in a murder case, not the first legal representation at the police station.
As you can see, it's not as easy as you think.
The cases mentioned earlier in this thread are clear cut, no doubt about these criminals' guilt.
What you're describing is not clear cut.