In this work a page from a book has been deliberately wounded, and then infected with bacteria. In this context, it was cut with a scalpel, then inoculated at the site of the lesion with the blood red pigmented bacterium Serratia marcescens, and finally placed onto bacteriological growth media. The bacteria used here are able to communicate with each other, collaborate in numbers to overcome obstacles to great for the few, and can swarm and move together in a coordinated manner through the paper of the page. The spreading lesion thus reveals an uncomfortable reality, that our world is dominated by invisible microbiological life. Moreover, the bacterium used here produces haemoglobin, the same oxygen transporting mammalian protein that colours blood red, and it thus harbours the evolutionary origin of our own blood.