The cliche says that power always corrupts.

What is seldom said is that power always reveals.

When a man is climbing, trying to persuade others to give him power, concealment is necessary.

But as a man obtains more power, camouflage becomes less necessary.

That's a quote from the American political biographer Robert Caro.

He was talking about Washington, but the same could be said of Westminster,

where I've worked as a journalist for almost a decade.

Over the years, I've heard stories of sexual harassment and bullying. They circulate,

but rarely come to the surface because powerful people are often protected by the system and by each other.

In this series so far, we've heard about abuse that goes to the very top

of government, that remains hidden because in politics, protecting reputations and holding on to

power often takes precedence over everything else. We've found out what's going on. Now we want to know how it can be stopped.

We're going in search of some answers.

I think probably like most reporters in Westminster who cover this subject, I do know a lot more stories than what I could actually publish.

We don't go out and look for information about individuals, but quite often they will come and tell us,

or somebody else will tell us, and so we know.

I have a platform and a voice that I can use

and I'm determined to use to give other people confidence to speak out.

This is the time to really make a historic change.

And Mr Speaker, Lindsay Hoyle, this could be his legacy.

I'm Liz Bates and from Sky News, this is the open secret.

Part 3. Looking for answers.

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