Results from the detrending of the K2 light curve with wotan. Upper panel : detrended light curve, with the epochs of the transits of HD 224018 b indicated by vertical dashed lines. Lower panel : TLS periodogram after masking the 36.6 day transits and the mono-transit, and restricting the search to orbital periods shorter than 19.7 days. The main peak is found at 10.64 days. Individual transits with very low S/N transits are shown in Fig. B.6, demonstrating how a fine-tuned detrending was crucial for their detection.