She felt sure someone would have heard something, if anything bad had actually happened.

Everyone in the room now knew what had actually happened.

In a way I'd like to hear about what actually happened.

Quite a lot's happened in the past few months actually.

He was by no means certain as to what would actually happen.

He wants her to tell the town what actually happened.

I need to find out more about what actually happened.

From one day to the next something could actually happen!

I can't say more since we don't know what actually happened or if anything did happen at all.

Only later did he find out what had actually happened in that building.