Cuckoo's Calling Part 4

I managed to get to part 3 of the book now. Meanwhile, Strike is slowly but surely advancing in the landry case. He has managed to gather almost of the possible people who have a relation to Landrys death. With help of Robin, he gathered more information about the afternoon before Lula died and the mysterious Rochelle Onifade( Rehab girl). detective Wilson finally sent over the police file about Landrys death. The entire night Strike went threw the file with a fine comb and find details that seemed spurious to him. He even got hold of the CCTV footage showing the two mysterious runners that John Bristol mentioned in his notes.