Just when you thought it was safe to go back in the water...

A banking crisis has seemingly emerged out of nowhere, in a system that we've been told is stable, well capitalised and far from its parlous state when the credit crunch and financial crisis struck.

So, what is going on and why did both the Federal Reserve in the US and the Bank of England see fit to raise interest rates this week?

On this week's podcast Georgie Frost and Simon Lambert talk interest rates: whether we have hit the base rate peak, when they might fall, why central banks keep raising them and what the impact will be for savers, borrowers and investors.

Plus, what's going on with the banks? Why the sudden wobble? What's it got to do with rising interest rates and government bonds? Is this just a shake-out taking out those that weren't very well run anyway, or something more dramatic?

Also on the show, Simon explains why he thinks some people might need to sell some investments now. (But not for the reasons above.)

And finally, are Pokémon cards really an investable asset? The This is Money team dived into the world of collecting hem this week, Simon explains what they found out.