Collier's acting career started in 1938, when she had a small but credited role in A Desperate Adventure, starring Ramon Novarro and Marian Marsh. From 1940 through 1949, her career would be active and somewhat successful, with her playing mostly heroine roles in B-movies. During that period, she often starred opposite western stars Bob Steele, Tom Tyler, and Dennis Moore. In 1950, she starred in the sci-fi serial The Flying Disc Man from Mars.
Collier was sometimes called the Fourth Mesquiteer because seven of Republic Pictures' The Three Mesquiteers movies featured her as the female lead. Collier played Carol in the soap opera Dear John, which ran on CBS in the 1930s and 1940s. Beginning December 6, 1948, she was featured in You, a program on KMGM in Los Angeles, California.
In 1949, Collier co-starred in City Desk, a drama about activity in the newsroom of a newspaper. From 1950 through 1957, she starred mostly on television series episodes. She played Mary, the hero's girlfriend and sidekick, in 58 episodes of the television series Boston Blackie, which ran from 1951 to 1954. She retired from acting after 1957.
| Год | Название | Роль | Тип |
|---|---|---|---|
| 1958 | Missile Monsters | Helen | Фильм |
| 1956 | Jungle Safari | Pamela Courtney | Фильм |
| 1955 | Screen Director's Playhouse | Lady Elaine | Сериал |
| 1951 | Boston Blackie | Mary Wesley | Сериал |
| 1951 | Rhythm Inn | Betty Parker | Фильм |
| 1950 | Flying Disc Man from Mars | Helen Hall | Фильм |
| 1950 | Dick Tracy | Fluff | Сериал |
| 1950 | Joe Palooka in Humphrey Takes a Chance | Anne Howe Palooka | Фильм |
| 1949 | Miss Mink of 1949 | Alice Forrester | Фильм |
| 1948 | Out of the Storm | Ginny Powell | Фильм |
| 1948 | Arthur Takes Over | Margaret Bixby | Фильм |
| 1947 | Slave Girl | Aleta | Фильм |
| 1946 | Wild Beauty | Linda Gibson | Фильм |
| 1946 | The Cat Creeps | Gay Elliot | Фильм |
| 1946 | Ночь в Касабланке | Annette | Фильм |
| 1946 | Girl on the Spot | Kathy Lorenz | Фильм |
| 1945 | The Crimson Canary | Jean Walker | Фильм |
| 1945 | Penthouse Rhythm | Linda Reynolds | Фильм |
| 1945 | The Naughty Nineties | Miss Caroline Jackson | Фильм |
| 1945 | Jungle Queen | Pamela Courtney | Фильм |
| 1944 | Jungle Woman | Joan Fletcher | Фильм |
| 1944 | Женщина-кобра | Veeda | Фильм |
| 1944 | Следуя за парнями | Lois Collier (нет в титрах) | Фильм |
| 1944 | Prices Unlimited | Фильм | |
| 1944 | Weird Woman | Margaret Mercer | Фильм |
| 1944 | Ladies Courageous | Jill Romilly | Фильм |
| 1943 | She's for Me | Eileen Crane | Фильм |
| 1943 | Молодые идеи | Co-ed (нет в титрах) | Фильм |
| 1943 | Get Going | Doris | Фильм |
| 1943 | Santa Fe Scouts | Claire Robbins | Фильм |
| 1943 | My Son, The Hero | Nancy Cavanaugh | Фильм |
| 1942 | The Phantom Plainsmen | Judy Barrett | Фильм |
| 1942 | Westward Ho | Anne Henderson | Фильм |
| 1942 | The Affairs of Jimmy Valentine | Receptionist | Фильм |
| 1942 | Raiders of the Range | Jean Travers | Фильм |
| 1942 | The Man Who Returned to Life | Mary Tuller | Фильм |
| 1942 | Blondie Goes to College | Coed | Фильм |
| 1941 | West of Cimarron | Doris Conway | Фильм |
| 1941 | Gauchos of El Dorado | Ellen | Фильм |
| 1941 | Sailors on Leave | Pretty Brunette (нет в титрах) | Фильм |
| 1941 | Outlaws of Cherokee Trail | Doris Sheldon | Фильм |
| 1941 | Ice-Capades | Audition Girl | Фильм |
| 1940 | Girls of the Road | Road Girl (нет в титрах) | Фильм |