Hey @budwaiser!
Currently, the Continue Reading link goes from the Excerpt (the 55 word Testimonial) to the Full Testimonial (which stands alone on its own page.)
We’ve had a few people ask about an accordion-like feature where you would instead click to expand the testimonial. This isn’t currently available but is on our punch list.
In the meantime, to accomplish this behavior you would need to customize the single testimonial content template and add some custom javascript to achieve this functionality. I would imagine customizing the template to output both the short and the full version and show / hide them via javascript when the user clicks on the link would work. Or, you could just output the full version and insert some HTML that the javascript would look for to show / hide the full content.
I hope that helps!
All the best,
Richard