The first season of HBO's successful new series Westworld may just be reaching the mid-way point, but it's already implemented itself as one of the year's big talking-point shows.

Since episode one of the sci-fi western - an adaptation of Michael Crichton's film of the same name - fans have been debating intensely about many of the show's mysteries including the intentions of Ed Harris' character the Man in Black.

It turns out HBO programming president Casey Bloys is tracking these theories online - some of which, he claims, are not far off the mark.

Westworld - Episode 5 Preview

Speaking to Variety, Bloys said: "There are a lot of theories out there, and with some of them, I’ve been very impressed with how they’ve constructed the guesses. I’ll just say, they’re getting close.

"I think people will get the answers they’re looking for by the end of season 1. A lot of the ones that people are buzzing about."

Westworld: Who's a host? Who's a guest? Show all 16 1 /16 Westworld: Who's a host? Who's a guest? Westworld: Who's a host? Who's a guest? Dolores Abernathy (Evan Rachel Wood) - a host An android who discovers her entire life is an elaborately constructed lie. Westworld: Who's a host? Who's a guest? Bernard Lowe (Jeffrey Wright) - a host Head of the Westworld Programming Division and creator of artificial people - he is revealed to be a host in the closing moments of episode seven. Westworld: Who's a host? Who's a guest? Teddy Flood (James Marsden) - a host A newly-created gunslinger in pursuit of a local beauty. Westworld: Who's a host? Who's a guest? Maeve Millay (Thandie Newton) - a host The madam of Westworld. Westworld: Who's a host? Who's a guest? The Man in Black (Ed Harris) - a guest A mysterious, sadistic rich guest of Westworld who is searching for a "deeper level" in the park. Westworld: Who's a host? Who's a guest? Theresa Cullen (Sidse Babett Knudsen) - a programmer Westworld's terse operations leader, responsible for keeping the park from sliding into unscripted chaos. Westworld: Who's a host? Who's a guest? Hector Escaton (Rodrigo Santoro) - a host A wanted outlaw. Westworld: Who's a host? Who's a guest? Lee Sizemore (Simon Quarterman) - a programmer Westworld's temperamental narrative director. Westworld: Who's a host? Who's a guest? Logan (Ben Barnes) - a guest A louche bachelor who arrives in Westworld with his friend, William (Jimmi Simpson). Westworld: Who's a host? Who's a guest? Armistice (Ingrid Bolsø Berdal) - a host A ruthless bandit. Westworld: Who's a host? Who's a guest? William (Jimmi Simpson) - a guest A reluctant first-time newcomer to Westworld, much like the way Richard Benjamin was in Michael Crichton's original film. Westworld: Who's a host? Who's a guest? Elsie Hughes (Shannon Woodward) - a programmer A rising star in the Programming Division tasked with remedying odd behaviour in the park's artificial beings. Westworld: Who's a host? Who's a guest? Clementine Pennyfeather (Angela Sarafyan) - a host One of Maeve's most popular android 'attractions.' Westworld: Who's a host? Who's a guest? Peter Abernathy (Louis Herthum) - a host Dolores' malfunctioning father. Westworld: Who's a host? Who's a guest? Angela (Talulah Riley) - a host An android who inducts Jimmi into Westworld. Westworld: Who's a host? Who's a guest? Dr. Robert Ford (Anthony Hopkins) - the creator The creative director of Westworld.

"There are a lot of theories out there, and with some of them, I’ve been very impressed with how they’ve constructed the guesses. I’ll just say, they’re getting close."

Despite the show's ratings success (each episode has garnered an average of 12 million viewers), Bloys is yet to commission it for another season - however, he stated that its future is "...looking really good."

Bloys also expressed interest in commissioning crime series The Night Of for a second season - something that wasn't awarded to Vinyl which Bloys axed as one of his first moves following his appointment.