show button if arriving from specific slide

Greetings!

When teaching a new subject, there is one section in which the student may require remediation from some previous slide.

I would like them to be able to go to that slide and then return to the current slide using a return button, but i only want that button to appear if the student arrived from that other slide.

This is much like the captivate remediation except the student is not arriving from a quiz question.

Any suggestions please?

Thanks.

Daniel.