a) Five Swift-XRT (blue), Swift-BAT (red) and Suzaku-XIS spectra of the type II 2012 November outburst of GRO J1008−57. Spectral channels are rebinned for display purposes. b) Combined residuals after applying the same model to the data as used in the previous analysis, including the secondary black body (see text). c) Best-fit combined residuals after excluding calibration features between 1.7 and 2.4 keV and adding three narrow Fe lines at 6.4, 6.67 keV, and 7 keV (compare Fig. 15).