Who plays Tatiana in 3 Body Problem? – Marlo Kelly
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3 Body Problem cast: All the characters explained and who plays them

12. Who plays Tatiana in 3 Body Problem? – Marlo Kelly
Marlo Kelly plays the mysterious Tatiana in 3 Body Problem. Tatiana is closely linked to Mike Evans' organisation and is seen visiting members of the Oxford Five. Marlo has previously had roles in Joe vs. Carole, Dare me and Patricia Moore. She also played Skye Peters in Home and Away, appearing in 43 episodes. [Netflix]