 The first sequel to Species , Species II was released theatrically in April 1998 . The film depicts astronauts on a mission to Mars being attacked by the aliens from Species , and the events that ensue upon their return to Earth . There , Dr. Baker has been working on Eve , a more docile clone of Sil . Madsen and Helgenberger reprised their roles , while Henstridge played Eve . Species II was received by critics worse than the first film , garnering a 9 % approval rating at Rotten Tomatoes , and Madsen denounced it as a terrible film . The film 's director , Peter Medak , attributed the failure of the film to not picking up the infected rat ending of the original film . Navarro later authored the novelization for Species II which followed the film 's original screenplay with added scenes . 
 The first sequel to Species , Species II was released theatrically in April 1998 . The film <a href='uninflect' title='1'><mark>depicts</mark></a> astronauts on a mission to Mars being attacked by the aliens from Species , and the events <a href='null_relcl' title='2'><mark>that</mark></a>ensue upon their return to Earth . There , Dr. Baker <a href='uninflect' title='3'><mark>has</mark></a> been working on Eve , a more docile clone of Sil . Madsen and Helgenberger reprised their roles , while Henstridge played Eve . Species II was received by critics worse than the first film , garnering a 9 % approval rating at Rotten Tomatoes , and Madsen denounced it as a terrible film . The film <a href='null_genetive' title='4'><mark>'s</mark></a>director , Peter Medak , attributed the failure of the film to not picking up the infected rat <a href='negative_concord' title='5'><mark>ending</mark></a> of the original film . Navarro later authored the novelization for Species II which followed the film <a href='null_genetive' title='6'><mark>'s</mark></a>original screenplay with added scenes . 
The first sequel to Species , Species II was released theatrically in April 1998 . The film depict astronauts on a mission to Mars bein attacked by da aliens from Species , and tdaevents ensue upon their return to Earth . There , Dr. Baker have been workin on Eve , a more docile clone of Sil . Madsen and Helgenberger reprised their roles , while Henstridge played Eve . Species II was received by critics worse than the first film , garnering a 9 % approval rating at Rotten Tomatoes , and Madsen denounced it as a terrible film . The film  director , Peter Medak , attributed thdaailure of the film to not picking up thedafected rat no ending of the original film . Navarro later authored the novelization fa Species II which followed the dam  original screenplay wit added scenes .