Old Time Radio sites can be confusing, if not overwhelming. Sometimes, the thick fog of nostalgia around these sites can be a little suffocating to newcomers. Do any sort of quick Google search and you will pull up all kinds of sites related to Old Time Radio. A lot of stuff has just been dumped onto the Internet. Unfortunately, not all of it is good.
Purveryor's of Old Time Radio often sell DVDs, CDs or even cassette compilations of comedy shows, mystery shows, detective shows, etc. as a way to get people interested. They also sell them packaged as "the scariest shows", "the best detectives", the funniest moments" etc. The episodes picked for these are often the most well known but not always the best. Don't be fooled, dig deeper for some of the gems!
Do a little searching on Ebay and you will see how much material is available beyond what is offered on compilations, free OTR sites and paid subscription services. Once you find a radio series that you like, you will probably also find that there is a reasonably priced DVD available on Ebay that contains all of the episodes from that series. This is the case for Escape, Suspense, Quiet, Please and other radio thrillers.
If you are researching Old Time Radio, there are many books available on this subject. A number of these are put out by specialty publishers and have limited availability. I will mention the book Suspense: Twenty Years of Thrills and Chills by Martin Grams Jr. because it is relevant to this blog. If you have recommendations for books that discuss a particular radio thriller covered in this blog leave them in the Comments section below.