*Verse 1 (Jason)

If I had my wand
I would Sectumsempra

If I had the chance
I’d kill you now

Why’d I let you live
Mercy clouds my vision

But I see you now
On Marauder’s Map
 [bad word] (Group)

I solemnly swear that I’m up to no good (Luke)
Mischief managed

I solemnly swear that I’m up to no good (Jason)
Mischief managed

I solemnly swear that I’m up to no good (Aaron)
Mischief managed

I solemnly swear that I’m up to no good (Gang)
Mischief managed

*Verse 2 (Aaron)

I see Wormtail now
I see his [bad word] The trap is set
To catch that rat
 [bad word] curse
I will make you suffer
Aveda Kedavra’s
Too good for you
 [bad word] (Group)

I solemnly swear that I’m up to no good (Luke)
Mischief managed

I solemnly swear that I’m up to no good (Jason)
Mischief managed

I solemnly swear that I’m up to no good (Aaron)
Mischief managed

I solemnly swear that I’m up to no good (Gang)
Mischief managed

Aveda Kedavra’s
Too good for you

*Verse 3 (Luke)(Jason and Aaron whispers)
 [bad word]  Sectumsempra, the killing curse [bad word]  Sectumsempra, the killing curse

Victim of my spells [bad word]  Sectumsempra, the killing curse)
I can see you [bad word]  [bad word]  Sectumsempra, ….)
Say goodbye

Aveda Kedavra!
 [bad word] (Group)

I solemnly swear that I’m up to no good (Luke)
Mischief managed

I solemnly swear that I’m up to no good (Jason)
Mischief managed

I solemnly swear that I’m up to no good (Aaron)
Mischief managed

I solemnly swear that I’m up to no good (Gang)
Mischief managed

I solemnly swear that I’m up to no good (Luke)
I can see you [bad word] 
I solemnly swear that I’m up to no good (Jason)
I’d kill you now

I solemnly swear that I’m up to no good (Aaron)
I will make you suffer

I solemnly swear that I’m up to no good (Gang)
On marauder’s map

Mischief managed
Mischief managed
Mischief managed
I solemnly swear that I’m up to no good