@hazardwarning You may want to read *Lock In* first before reading *Head On.* Although *Head On* can stand alone, the first book contains a lot of background that may enhance your enjoyment of the second book. // @c

@hazardwarning You may want to read Lock In first before reading Head On. Although Head On can stand alone, the first book contains a lot of background that may enhance your enjoyment of the second book.

// @c