I am in the final section of the chapter called whitechapel. Sherlock and Dr. Watson have gotten out of the storage room in the opium den and Dr. watson is distracting the guard.
I have tried for hours to tranquilize the guard but cannot get the green symble of the hypodermic needle to appear as he walks past the corner of the hallway.
I am playing the PC windows version and wonder if this is a know problem?
Has anyone found an easy way to accomplish this symple but otherwise impossible for me to complete.
I have watched a video on this paricular event and it looks so simple but is probably being done on xbox or PS3.