Marlow and his crew were detained by the Colonial Marshals for bringing a foreign creature into Sevastopol Station. His efforts were futile however as the Xenomorph embryo that was incubating within Foster violently erupted from her and escaped.

Breaking all quarantine procedures, Marlow decided to bring Foster to Sevastopol to have her treated there, using the Nostromo's flight recording as leverage to gain entry aboard the station. Despite this, Marlow insisted on Foster to remain in hypersleep as he remained suspicious as to what the facehugger had done to her and hoped to slow down the process. After some time, the Facehugger leventually detached itself from Foster and subsequently died, leaving her to awaken from her coma apparently unscathed. While exploring the chambers, Foster was impregnated by a Facehugger, Marlow and the third crewmember carried the comatose Foster back to the Anesidora and quickly retreated to space in order to find help for her. As the crew descended down to the derelict's lower area, they found themselves in a huge, cavernous chamber filled with Xenomorph eggs. After discovering the fossilized remains of the ship's pilot and deactivating the signal, the crew proceeded to investigate a lower area, accessible through a hole burned in the floor. Once they landed on LV-426, Marlow, together with his wife, Foster, and a third crewmember set foot on Acheron and headed towards the distress signal's source and soon tracked it to a derelict spacecraft. The path led the Anesidora's crew to the planetoid LV-426 where they also discovered a distress signal.

In 2137, the Anesidora recovered the flight recorder unit of the USCSS Nostromo in Zeta Reticuli, Marlow extrapolated the path of the flight recorder in hopes of finding the Nostromo's wreckage and turn it in to Weyland-Yutani for a reward.

Anesidora alien