At one point a character places a copy of the play "Macbeth" on top of three other books lying flat on a shelf. Two of the books' titles are clearly visible, both by H. G. Wells. This show is set in the late 1890s, but the two books were actually written in the following century: The Food of the Gods and How It Came to Earth (1904) and The War in the Air (1908).
Murdoch and Brackenreid are carrying portable electric lamps. This show is set in 1895 but the first portable lamp was patented in late 1896 and didn't become practical until 1899. In addition the lamps produce an intense blue-white beam typical of modern LED bulbs rather than the weaker yellowish tint of old incandescent bulbs.