The other tabs of this song are wrong. I'm nearly positive it's in G and goes like this:
[Verse 1]
G C
Ten years ago, on a cold dark night
D7 C G
Someone was killed, 'neath the town hall light
C
There were few at the scene, but they all agreed
D7 C G
That the slayer who ran, looked a lot like me
G C
The judge said son, what is your alibi
D7 C G
If you were somewhere else, then you won't have to die
C
I spoke not a word, al-tho' it meant my life
D7 C G
For I'd been in the arms of my best friend's wife
[Chorus]
C G C G
She walks these hills in a long black veil
C G C G
She visits my grave when the night winds wail
C G
Nobody knows, nobody sees
C D7 G C G
Nobody knows but me
[Verse 2]
G C
The scaffold is high and eternity's near
D7 C G
She stood in the crowd and shed not a tear
C
But sometimes at night, when the cold wind moans
D7 C G
In a long black veil, she cries o'er my bones
[Chorus]
C G C G
She walks these hills in a long black veil
C G C G
She visits my grave when the night winds wail
C G
Nobody knows, nobody sees
C D7 G C G
Nobody knows but me