In 2012 we demonstrated that molecular spacer layers could be intercalated in between FeSe layers resulting in a dramatic enhancement of the critical temperature: FeSe is itself an 8 K superconductor, but the incorporation of Li(NH2/NH3) raises the transition temperature to 43 K. We are now able to prepare other molecular-intercalated FeSe compounds using the same technique. In the case of the K intercalates, two compositions have been reported with different K:NH3 ratios and with different transition temperatures. This muon proposal is being submitted at the same time as a GEM/WISH proposal in order to determine both the crystal structure and superconducting properties of these two phases which we have successfully isolated. We will also search for magnetism in "aged" samples, the existence of which has been hinted at in very recent neutron experiments.