On the surface, HBO's currently acclaimed and so far strongly rated mystery drama series "The Night Of" seems to be very much a 'one and done' style affair - an eight-episode self-contained event series about a complex murder case in New York City. That may not be entirely true though as showrunner Steven Zaillian told the press (via THR) this weekend at the network's TCA presentation that a possible second installment is in discussion: "We're thinking about it and if we come up with something we all feel is worthy of doing, we'll do it.