Tick tock goes the clock

As Night Terrors writer Mark Gatiss revealed in an interview beforehand, his episode contained a rather haunting nursery rhyme containing a warning for our favourite Time Lord. You can hear it again in the video below.

Updated: Full version (confirmed by Mark Gatiss on Twitter)

Tick tock goes the clock
And what now shall we play?
Tick tock goes the clock
Now summer’s gone away? (Missing from video)

Tick tock goes the clock
And what then shall we see?
Tick tock until the day
That thou shalt marry me

Tick tock goes the clock
And all the years they fly
Tick tock and all too soon
You and I must die

Tick tock goes the clock
We laughed at fate and mourned her
Tick tock goes the clock
Even for the Doctor

Tick tock goes the clock
He cradled her and he rocked her
Tick tock goes the clock
Even for the Doctor…