I've recently had to start driving three hours a day, got tired of the listen-to-people's-opinions-in-conversation podcast format and shifted to full-cast serial audio-dramas, leaning towards sci-fi and suspense to keep my brain alert. Early on, it was easy to find great serials like The Leviathan Chronicles, The Left Right Game, Rabbits, End of All Hope, etc., but now I have to dig through reviews and forums (forums are especially helpful), which is how I found Syntax.I give this only four stars because it is a really good story with effective sound effects but a mediocre script. Much of the dialogue comes off as high school level conversation, and two of the main female characters, Alex and Lizzie, have irritating high pitch deliveries like what you'd hear in many of today's cartoon characters. Lizzie, in fact, does not sound like the educated scientist she is supposed to be, but like a gibbering, giggling pre-teen. The rest of the cast is either good or adequate enough not to be as distracting as some of the shallow lines they must deliver. But back to the good part, the plot is linear, clever and mostly exciting. It is the story of a team, each with unique skills, thrown together to explore a portal leading to another world that has it's own portal to another world, which also has another portal to another world, and so forth. They find the deeper through the portals they go the more challenging it gets to make it back to the starting point, and safety. I'm almost done with season two and am glad I've stuck with it. Listen if you need to drive a lot and want to be carried through an otherworldly journey of unknowns as the miles clock up.