I be very pleased with the second series of Dr who . in my view David Tennant make a excellent replacement for Eccleston -lrb- who while good , do not seem to fit into the role naturally -rrb- . the storyline take a darker turn , with the rise of the sinister government agency Torchwood . several new and old adversary return , include the dreaded cyberman . the start and end to the series be both very well do , with the right balance between action , humor , and plot . the series also engage in some intriuging exploration , include a episode feature the visit to a planet orbit a black hole , to revolutionary France , and to another paralell universe . the series end on a promising note , and I be sure it will only get better from this point onward .