At Dragonreach when you have to capture and defeat Odahviing... it won't happen for me.
I dragonrend him he comes inside won't move and nothing happens....?
Any help would be great.

Thanks

DO...NOT...POST...SPOILERS...IN....HERE.

It is in capitals at the top of the page after all.

Fall back towards the main door.
He will follow and the guards can spring the trap.

This is one quest where having followers present will slow the quest down.